Category Archives: Reviews

The Problems with Remote Collars

There are many different training methods out there, and each has its pros and cons. Today, I want to talk specifically about the use of remote collars (also known as shock collars or e-collars).

Photo by Tate Viehmann

Photo by Tate Viehmann

Today’s remote collars are a far cry from early versions. Many brands now have a very wide range of shocks (called “stimulations” by collar users), which can range from virtually unnoticeable to intensely painful. “Good” remote collar trainers use the collars primarily as negative reinforcement. What that means is that the dog learns to comply immediately in order to turn off a painful, uncomfortable, or annoying sensation. While this is a far cry from the early days of remote collar use, when dogs were hurt at high levels for noncompliance (a training technique called positive punishment, for you geeks out there), it’s still not a pleasant way to learn.

So, how would someone use a remote collar? Let’s use a recall (come when called) as an example. The trainer would start by asking the dog which level of stimulation was the right one. This is done by putting the collar on the dog and, starting at one, increasing the level until the dog displays a change in behavior. This level is then the one used for initial training, although the trainer may adjust the level up or down depending on a variety of factors. The dog should not be displaying significant signs of pain or distress at this level (no yelping, head shaking, or fight/flight reactions).

Once the “appropriate” level of shock is determined, the trainer will teach the dog to turn off the shock. This can be done in a variety of ways, but usually involves repeated stimulations (tapping the remote over and over rapidly) until the dog moves towards the handler, at which point the shocks stop. The dog learns that his or her behavior can make the sensation stop.

While remote collar training can certainly be effective (if it wasn’t, it wouldn’t still be around), it is not a technique that I recommend. So, what are the common problems with remote collar use?

My biggest concern with the use of these collars is that, used according to modern training directions, there is no way for the dog to avoid shock entirely. The first “tap” of the collar is given simultaneously with the command. While the dog can quickly turn off the sensation by complying, there is no time or way for the dog to entirely avoid all shocks. The dog is only able to avoid future shocks, not the initial one. This necessarily sets up a stressful learning experience.

But what if the collar isn’t used simultaneously with the command? What if, instead, the trainer only begins tapping the remote after the dog has had a few seconds to respond? While this training method would avoid the above issue, it creates other problems. Don’t forget, Pavlov is always on your shoulder! If the recall command is repeatedly followed by an uncomfortable or unpleasant stimulus, you will quickly condition your dog to feel dread when you call. This process is called classical conditioning, and it’s powerful stuff. We call cues that are associated with icky things like this “poisoned” cues, and research shows that changing the association with a poisoned cue is a very long-term, difficult process. Once your dog has associated a word with something unpleasant, they will always have that memory in the back of their mind when they heard the poisoned cue in the future, even if future repetitions of the cue have only been associated with nice things. By the way, this same process happens if you use a warning tone or vibration before (and eventually even in place of) the stimulation.

Speaking of emotions, my second concern has to do with the quadrant of learning theory that remote collar users employ: negative reinforcement. In negative reinforcement, the dog learns to do something in order to stop an unpleasant thing. The primary emotion associated with negative reinforcement is that of relief. People feel this too! Consider doing your taxes, shoveling the driveway after a big snowstorm, or loading the dishwasher. The biggest reward for completing these tasks is the sensation of relief when you’re done. The tasks are not enjoyable in and of themselves, but you feel better when they’re completed because you’ve removed the pressure of the need to act that’s been looming over you.

Compare this to the emotion that positive reinforcement causes: joy! Which would you rather have your dog feel when you call him? When trained with positive reinforcement, the recall cue becomes a tiny reward in and of itself. Dogs feel a little jolt of happiness when you call, because they’ve associated the recall over and over with very pleasant things happening. Dogs who are trained with negative reinforcement, such as remote collars, feel a strong compulsion to move towards you when you call them, followed by a feeling of relief once they are in motion towards you. That’s not the same, and it’s not what I want our relationship to be based on. That’s not to say that dogs trained with remote collars can’t have lovely relationships with their owners – they can! In fact, training of any sort will begin to build a relationship, regardless of methods used. But my opinion is that positive reinforcement works the very fastest and best to build strong, lasting relationships based on mutual respect and understanding.

Finally, remote collars can cause fear or aggression issues. This comes back to that classical conditioning we talked about before. If you repeatedly use the collar to call your dog away from people or other dogs, for example, your dog may come to associate the uncomfortable sensation with what he sees when the collar is activated (dogs or people) rather than with his behavior. If he’s looking at another dog every time he hears the warning beep or gets “tapped,” he’s going to come to associate other dogs with this, and his behavior towards other dogs is likely to change. In fact, this is such a common situation that the AVSAB has released a position statement warning about these risks, and advising that e-collars are never used in dogs who have any history of fearful or aggressive behavior.

But, aren’t remote collars necessary in some situations? What about if your dog lives near a busy road or has a history of chasing livestock? Aren’t e-collars more reliable than positive reinforcement alone? This is one of the most common excuses I hear for using remote collars. Luckily, this question has been studied, and the results were quite conclusive. Positive reinforcement training works every bit as well as remote collar methods in teaching a reliable recall, even for dogs who have a history of chasing livestock. Furthermore, dogs trained with positive reinforcement methods showed fewer signs of stress, such as yawning and tense muscles, and had lower salivary cortisol levels three months later upon visiting the training center. If you feel that you need to use a remote collar to achieve a reliable recall, you likely need a better trainer and better management tools, not a remote collar.

Ultimately, I believe that remote collars are a step up from previous compulsive methods of training dogs, such as using a long leash attached to a slip or pinch collar. But that doesn’t mean that they’re the best method out there, or even a good method, and before using one I would strongly advise you to do your research. Reward-based methods work, even with strong, hard-headed, and highly predatory dogs. In fact, they work really well for all animals, with fewer potential side effects. They can work for you, too.

Housetraining Tips: Should you use potty pads?

Potty pads can be extraordinarily useful for dogs with special needs. However, their use can also cause a host of unintended problems. So, should you use potty pads to housetrain your dog? Here are the pros and cons of these housetraining tools.

Foster puppy Chowder (available for adoption through Secondhand Hounds!) started off on potty pads as we addressed his fear issues.

Foster puppy Chowder (available for adoption through Secondhand Hounds!) started off on potty pads as we addressed his fear issues.


  1. Potty pads are great for dogs with medical issues. They can be placed over the bedding of dogs with incontinence issues or used for dogs recovering from surgery who can’t walk far enough to toilet outside. Our own dog, Trout, uses potty pads when we need to leave her for more than four hours, as she’s unable to hold her bladder longer than that due to an autoimmune condition.
  2. Potty pads are excellent initial choices for timid or fearful dogs. When I foster a dog who’s considered a “flight risk” (a dog who would run away if they got off their leash and wouldn’t approach any person to be caught), I start them on potty pads while we build up trust. Placing potty pads in half of a room, with the dog’s food, water, and crate on the other half, allows the dog the freedom to toilet as they need to without the potential trauma of being leashed or handled by a person. I can then devote all of my training time with that dog to trust-building exercises such as hand feeding them, reading to them, and clicker training games. Once the dog becomes comfortable with me and is okay on a leash, it’s important to switch them to outdoor potty training to continue their socialization and build up positive potty habits.


  1. Potty pads teach dogs to toilet on square, absorbent surfaces. This can cause dogs to make potty training “mistakes” on your rugs, bath mats, dog beds, or blankets – all of which resemble the substrate your dog has developed a preference for. If you want to use an indoor toileting option for your dog long-term, consider investing in a doggy litter box instead. The special litter doesn’t resemble anything in your home, which makes where your dog is supposed to toilet a much more black-and-white choice – and your training much easier!
  2. Using indoor housetraining options limits socialization. Puppies need to go to the bathroom all the time – every hour if they’re quiet, and sometimes as often as every 10-15 minutes when they’re playing. All of this makes for lots of great socialization during potty trips outdoors. Puppies who are trained to eliminate in their home are often deprived of this frequent exposure to life outside their house, and are at a much higher risk of developing issues such as fear or reactivity due to these socialization deficits. Unless there’s a legitimate behavioral or medical reason why your puppy should not be taken outdoors, make sure your puppy is getting exposed to the sights, sounds, and scents of the world outside your home multiple times every day, regardless of what sort of housetraining option you decide on.
  3. Potty pads encourage laziness. Training your dog to go potty outside requires effort on your part. You have to go out with your dog and most people correctly remember to give their dogs treats for going potty outdoors. Not so with potty pads! Dogs don’t “self train” on these, but many people expect them to. You still need to put the work into bringing your puppy to the pad and giving him a food reward for eliminating in the right location if you use potty pads, or you’ll end up with an incompletely housetrained dog.

So, there you have it! Unless your dog is highly fearful or has a medical issue, potty pads are a training tool you can probably skip. They add an unnecessary step to housetraining for most normally developing puppies and adopted dogs, and are likely to cause more housetraining “mistakes” as your dog struggles to differentiate between the potty training pad and your household rugs. I don’t personally use potty pads except for in the cases I mentioned above, and try to move dogs away from them as quickly as possible.

Have you ever used potty pads with your puppies or adult dogs? What were your experiences with this training tool?

Moving with Minnie

[Note from Sara: recently my friend and fellow Certified Professional Dog Trainer, Katie Kelly, moved with her Shih Tzu, Minnie. I was so impressed by the way that Katie supported Minnie and problem-solved to help her adjust to apartment living that I asked her to write a guest blog post about her experiences. Enjoy!]

Minnie is my little sidekick. She goes with me absolutely everywhere: to the pet store, to the park, and to visit with family and friends. She has also moved with me countless times. We’ve lived in a couple different homes in Rochester, multiple places in Winona, and at one point, maintained residence in Zumbrota as well. However, the two of us had grown accustomed to the private life of living in a house. Neither of us had ever truly experienced apartment living until recently.

Minnie and Katie

Minnie and Katie

In the first couple days of living in our new apartment, I could tell Minnie wasn’t truly comfortable. She would find her hiding places and shut down: she didn’t seek out attention, she didn’t play with her toys, and she didn’t chew on her bones. She needed some time to adjust, and then she’d return to being normal happy–go-lucky Minnie. At least that is what I thought.

Technically, dogs are not allowed at my apartment complex, but the landlord did me a favor and allowed us to take residence regardless. Because of this, I figured Minnie might be the window of opportunity: that she might provide a positive image for responsible dog owners who were looking to rent. As the only dog in the apartment building, I felt that it was important to make a good impression on the other residents as well as the landlord.

A week or so after moving, she was coming around little by little. But instead of turning into the superstar I had hoped for, she started to become the stereotypical little yappy dog. I actually set up a video camera to see how she did when I wasn’t around, and I found she would bark incessantly, finding it difficult to calm herself. Then it hit me. I had just moved this five-year-old dog, accustomed to household living, into an apartment building. While it wasn’t too much of a change for me, I soon realized that it was a drastic change for Minnie. In her mind, there were loud scary noises coming from every direction. She had no idea who was making these noises, nor what they predicted. I started to truly hear it. There was door banging, knocking, stomping feet, and conversation in the hallways. Minnie didn’t have the capability to seek out or make sense of any of these things.

We started counter conditioning. I wore my treat pouch every moment we were in the apartment. Every time there was a slight noise, I would press the clicker before Minnie had the chance to react to it and treat her with high rewards. If Minnie did react, I’d call her or lure her (depending on the severity) away from the door and started treating her until I could see her physically calming down. However, this wasn’t enough. What happened when I was gone? Surely, all our hard work would go down the drain as those loud noises would stir her up without me there to help her cope.

We tried the Thundershirt, the DAP collar, the DAP diffuser, stuffed Kongs, puzzle toys, rawhides, bully sticks, and Through a Dog’s Ear classical music. I tried in every possible way I could think of to keep her busy, and to keep her feeling secure and calm. I thought of taking her to daycare, but she is fearful of other dogs. I figured the stress of daycare would just carry over to our home environment and make things worse.

I decided to shoot around for ideas. An idol of mine, who has an incredible amount of knowledge in canine behavior, was very helpful. She had mentioned everything above, and when I told her I had exhausted those efforts, she recommended the Manners Minder. Genius!

The Manners Minder is a treat-dispensing machine. I created a colorful note outside my door that let my neighbors know that I was working on Minnie’s issues and also invited them to be a part of the solution! Alongside the note, I taped the remote control that directly dispensed the treats from the Manners Minder. Inside my apartment, on a table next to the door, was the almighty, praise-worthy, treat dispenser (as Minnie saw it). While I was at home, I could see people were already willing to send Minnie magical treats. They’d walk by (with the associated stomping, talking, and slamming doors) and press the button on the remote taped outside my door. The machine would beep letting Minnie know that treats were on the way, before dispensing them before her very eyes! This machine allowed me to go to school, and while at home, Minnie could be counter conditioned by others who made those scary noises outside the door!

People = treats! My neighbors were very generous about using Minnie's Manners Minder.

My neighbors were very generous about using Minnie’s Manners Minder.

I had to laugh because there were times where I’d check the video camera and watch her progress when I’d get home from school. Many used the remote, but there were also instances where people walked by without using it, and to my surprise Minnie still wiggled her way over to the door expecting goodies. Those loud scary noises finally started to predict good things, and she no longer felt the need to bark.

Finally, Minnie was truly able to relax and feel comfortable in her new home.

Should I get an Invisible Fence?

I want you to imagine that you’re hanging out in your front yard on a pleasant summer day. It’s a lovely day, and you’re feeling pretty content as you lounge on your lawn, relaxing. You notice your neighbor approaching, and as they walk towards your house you smile and get up to greet them, extending your hand to shake theirs. Just as you’re about to meet one another, you’re interrupted by a sharp pinch, like a bee or wasp stinging you. The sensation is unpleasant, and your thoughts of a pleasant interaction with your neighbor are derailed by the mild pain you’re experiencing. Your neighbor continues on their way, and you go back to relaxing.

A few minutes later, a friend walks by your house, and when you attempt to say hello to them the same thing happens. As you move towards them, a sharp sting interrupts you. Over the course of the day, this happens each time you attempt to greet someone.

How would you feel? If I walk by your home at the end of the day, are you likely to act very social towards me?

Even worse, how would you feel if this kept happening all week, month, or year? What would you do if you got stung every time someone approached your property? Would you start warning them away? Avoid them? What emotions would you experience when a stranger approached you in your yard? I know that, personally, I really hate being stung. I would dread visitors, and would feel anxious about what was going to happen when people approached me, even if I didn’t always get stung.

Sadly, this exact situation happens to many dogs every day. I work with dogs who have been living this nightmare every week, and get calls from families of dogs who have been dealing with this on a regular basis.

Photo by Ian Crowther (flickr)

Photo by Ian Crowther (flickr)

I’m talking, of course, about dogs who are confined using an Invisible Fence or other electronic containment system. While these systems can provide the benefit of more freedom and a sightline unspoiled by physical fences, they aren’t without risks. Unlike some of my colleagues, I don’t think every dog who uses an electronic containment system will demonstrate behavior problems. However, as someone who frequently deals with the fallout when these fences do cause issues, I think we need to be thoughtful about their use. I will not personally ever use an electronic fence for any of my dogs, and strongly encourage my clients not to use them either. Much like getting surgery in a third world country, electronic fences may save you some money – but they’re also much riskier than other options.

So, what can go wrong? Here are the most common issues caused by electronic fences, in order of the frequency with which my clients report them:

  • Fearful or aggressive behavior towards visitors on the property. This is by far the most common problem owners of invisibly fenced dogs encounter. This is also absolutely predictable from a behavioral standpoint. In our human example at the start of this article, you saw how this problem could develop over time.Even dogs who have a very clear understanding of how these collars work and who know the boundaries of their yard will make mistakes from time to time. Remember that dogs have the cognitive capabilities of a 2-4 year old child. Would you expect a young child to always remember exactly how far they were allowed to venture?Dogs are most likely to make mistakes when they are excited, such as when people or other dogs walk past. At this point, classical conditioning (the Pavlov stuff) takes hold: the dog experiences a sting from the collar when he happens to be looking at that dog or person, and associates the unpleasant sensation with that dog or person. If this happens multiple times, dogs will naturally begin to react negatively when they are in their yard and they see a person or another dog. They do this not because they’re a bad dog, but because they have made negative associations with similar situations in the past. Some dogs will become fearful and tremble, hide, or shut down, but most respond aggressively in these situations, warning the person or dog away by barking. If that doesn’t work, they may escalate to lunging, snapping, or biting in their attempts to drive away the thing that they believe to be responsible for their pain.
  • Fearful or aggressive behavior towards people or animals off the property. Closely following the problem of unwanted behaviors on the home turf is the likelihood of these behaviors bleeding into all social interactions. The connection between a dog’s sudden behavioral change towards people on walks and his owner’s use of an electronic containment system isn’t always readily apparent, but some detailed history taking will usually reveal the relationship between the two. In fact, one of the questions on my intake questionnaire for every behavioral case includes which tools an owner has used for their dog. It’s so common for fear or aggression issues to develop 4-8 months after the installation of one of these systems that I find it necessary to screen for it.
  • Noise phobias. Just as a dog may associate the approach of people with being shocked, many dogs will become sensitive to the beeping sound that predicts this sensation. This becomes a problem when dogs generalize this connection to similar sounds. Think of all the beeping noises in your everyday environment: your microwave, your computer, your phone, your alarm… we live in a world of beeps. Now imagine that you expected to get stung every time you heard one of these noises. What a terrifying existence! This fear can cause dogs to become generally anxious, where they are always on edge, or can cause less obvious problems. If the dog associates a beeping sound with a certain behavior, he will often become reluctant to do that behavior again out of fear. If he associates it with a person, he may act nervous around that person in the future. Likewise, he may begin avoiding areas of the house in which he frequently hears beeping sounds because he doesn’t know where the boundaries in that area are, or he may freeze in fear upon hearing a beep, afraid to move lest he cross a boundary and receive a shock.
  • Fence darting. Some dogs may not ever display fearful or aggressive behaviors as a result of their confinement with an underground fencing system, but will push the boundaries of that confinement. Many predatory or excitable dogs are quite willing to take the shock in order to chase a bunny or squirrel or to rush a dog being walked past. Unfortunately, they’re usually not as willing to take a second shock in order to come back into their yard. Other tricksy dogs will test the fence, waiting until the collar no longer beeps. Once the battery dies (and there is no more beep at the edge of the property), the dog is free to roam at will. Speaking from experience (I worked at an open admission shelter that took in stray dogs picked up by animal control), electronic fences aren’t a reliable way to keep a determined dog in one place. Shelters and impound facilities are full of dogs wearing invisible fence collars.
  • Generalized fear issues. Young or sensitive dogs may react very badly to the introduction of an underground fence system. These dogs sometimes become fearful of their yard and are unwilling to go outside. Many of these fearful dogs will lose or backslide on their housetraining as they would rather soil the house than risk going outside, which they have associated with pain.
  • Safety concerns. Even if your dog doesn’t ever leave the yard and never experiences any unwanted behavioral fallout, it’s important to remember that the use of an electronic containment system doesn’t protect him from outside dangers.  Aggressive dogs, coyotes, or other dangerous wildlife can still enter your yard and attack your dog, whose ability to maneuver and avoid them is limited when he’s wearing his collar. People can also enter your property, either to willfully molest your dog (which is rare, but does happen, especially with groups of children) or not knowing that your dog is there. If your dog injures someone who has come onto your property, you could be liable. Unattended dogs may be stolen from their properties by people who remove the dog’s collar, then resell the stolen dog or use them as “bait” dogs.

If you do plan to use an invisible fence, there are a few things you can do to lower the risk. First of all, if your dog already shows fearful or aggressive behavior in any context, know that these behaviors may be exacerbated by the use of an invisible fence and seriously rethink your plan. Avoid using any sort of electronic containment for young dogs (under three years of age), and have the system introduced to your pet by a professional. Don’t cheap out on the system, either: the last thing you want is a faulty product malfunctioning and burning a hole in your dog’s neck (it’s happened) or shocking your dog every time you pull your car into the driveway over the wire (yes, it’s happened). Finally, if you start to see any of the behaviors detailed above, discontinue use of the fence and call a Certified Professional Dog Trainer immediately. The sooner you contact us, the better the chance that we can reverse or at least minimize the harm.

Sadly, cases caused by electronic containment systems continue to make up a sizeable chunk of my business. While I’m grateful for the income (hey, dog trainers have to eat too, and this isn’t exactly a lucrative profession!), it makes me incredibly sad when people and their dogs have to live with the fallout caused by these tools. It’s absolutely possible for dogs to live their whole lives with these fences and never experience a problem. However, the risk is there, and the use of these containment systems is significantly riskier than simply toileting your dog on leash or putting up a physical fence. Furthermore, it’s impossible to predict how any dog will react to electronic confinement. Your dog may be fine… but do you really want to bet his well-being on it?

[Edited to add: Great minds think alike, and when I saw this wonderful post on Notes from a Dog Walker that was eerily similar to this piece, I almost decided to pull this post lest people think I was copying it (I promise I wasn’t, as I write most of the posts you see here several weeks before they actually show up on the blog). If you’re still on the fence (ha!) about electronic containment systems, please go read her post as well. Experts agree: electronic containment is oftentimes bad news.]

Calming Aids: Thundershirts and Anxiety Wraps

Pressure is calming. We know this: we swaddle infants, use weighted vests for children with autism, and hug grieving friends tightly. Cattle are loaded into squeeze chutes for ease of medical care, and fractious cats are wrapped tightly in towels for grooming or vet procedures.

Pressure can be calming for our dogs too. Slow, deep strokes calm most dogs down while quick, light pats are more likely to amp them up. There are several different commercial garments available that claim to calm stressed, anxious, and fearful dogs. The two most common are the Thundershirt and the Anxiety Wrap.

Photo by Emily Penguin (note: this shirt is fit quite loosely, and should be adjusted more snugly for better effectiveness)

While there is little to no published research regarding the efficacy of these garments, anecdotal evidence suggests that they may be helpful for some dogs. That said, they will not (and should not) replace appropriate behavior modification or medication for severe anxiety. In addition, they do not work for every dog, and may actually make some dogs more upset.

It’s important when introducing any body wrap to observe your dog carefully. Be aware of the difference between a relaxed dog and one who has shut down. Some clients will report success, thinking that because their dog is lying down and not moving he has become less anxious. However, upon examining his body language we often realize that the dog is still just as uncomfortable, but feels inhibited by the new sensation of pressure on his torso and thus is unwilling to move.

Not sure whether your dog would benefit from one of these wraps? Try dressing him in a snug t-shirt, and observe his reactions. If he seems comfortable in the t-shirt, he will likely do well with the wrap as well. The Thundershirt has a money-back guarantee, so if it stresses your dog you can return it to the store you purchased it from for a full refund. Make sure to try it on first when your dog is calm and relaxed, since you will not be able to accurately gauge your dog’s reaction to it during a stress-inducing situation.

If a Thundershirt or Anxiety Wrap appears to help your dog, remember to use it regularly during pleasant, stress-free times so that your dog does not come to associate its use with aversive events. If you use the Thundershirt for car anxiety, for example, make sure to have your dog wear it occasionally when he is working on a stuffed Kong toy at home, or he will learn that it always predicts frightening car experiences and may begin to dislike it.

Have you ever used a shirt or wrap for your dog? What were your experiences? Please share your stories in the comments section below!

Calming Aids: Dog Appeasing Pheromone

We’ve written about the importance of recognizing your dog’s stress level and how to institute a cortisol vacation for chronically stressed dogs. However, lifelong avoidance is neither practical nor helpful. So, what are some things you can do to lower your dog’s overall stress level?

Today we’ll begin discussing some helpful calming aids that may make a difference in your dog’s ability to relax. Understand that these tools are simply that, tools, and will not fix any behavior problems in and of themselves. Training and behavior modification are still necessary, but may be more effective when paired with these remedies. Remember that every dog is different, and what helps one dog may not work for another.

One of the most innocuous calming remedies available is Dog Appeasing Pheromone, or Comfort Zone, a synthetic version of a pheromone released by mother dogs when puppies are nursing. Pheromones are chemicals that influence one’s emotional state, and are processed through the olfactory lobe. D.A.P. appears to help comfort and reassure some dogs.

One thing that I like about the company is the fact that their product has been studied in clinical trials. Many over-the-counter calming remedies have no scientific evidence as to their efficacy, and are in truth the canine equivalent of snake oil. D.A.P. has been found to reduce barking and increase resting behavior in shelter dogs, promote relaxed behaviors during vet exams, and reduce signs of thunderstorm phobia, among other things.  More research into the product is needed before we can say with complete certainty that it does what the company claims, but anecdotal evidence seems to support these claims.

Several forms are available, including a collar, spray, and diffuser. I recommend the diffuser for most of my clients. Many clients report little to no observable change when they begin using D.A.P., but then report that when the diffuser runs out they realize that it has indeed made a difference. There are no reported side effects to this remedy: it either helps, or it doesn’t, but it’s not going to hurt anything to try. The diffuser covers a 650-square-foot area and usually lasts about four weeks. I use one for my own dogs when introducing a new foster into my home, and believe it to be helpful.

As with any successful product, there are now several knock-off versions of D.A.P. available on the market. In general, clients have not reported success with these products, and at this time I recommend sticking with the name brand.

Have you tried Comfort Zone with your dog(s)? What did you think? Please share your experiences in the comments section below!

A Case for Kongs

If every dog in the world could be given one toy, I think the Kong would be the way to go. A Kong toy is shaped somewhat like a rounded rubber pyramid with a hollow center. Kongs have three chewing “levels” – red for beginners, black for tough chewers, and blue Kongs, which are the toughest level and are available only through veterinarians because they are radio opaque (which means they will show up on an x-ray if the dog swallows them). There are also special, softer Kongs made for puppies or senior dogs. These Kong toys have a marbled appearance, with white mixed into the pink, blue, or purple color.

Kong toys are extremely durable, which means they can go from the microwave to the freezer to the dishwasher and back again without breaking down. They stand up well to almost every dog, provided you choose the right size and hardness level for your dog’s tenacity of chewing. Kong toys bounce erratically when thrown and provide a great chew toy.

The thing that puts a Kong toy head and tails above the competition, though, is their hollow center. Kong toys can be stuffed with an amazing variety of food items. This is a great source for mental exercise! For dogs who are left home alone all day, consider throwing out your dog’s food bowl and feeding solely from Kong toys.

There are certainly other brands of toys that resemble Kongs available, but the Kong is the “original” toy and is the one that seems to work best for most dogs. There is one Kong knock-off on the market which may be of interest to some people though, and that is the “Squirrel Dude” toy manufactured by Premier/PetSafe. This tough purple toy (yes, it resembles a squirrel) improves on the Kong design by adding four small rubber prongs which line the inside of the toy’s hole. These prongs make it much harder to get food back out of a Squirrel Dude toy once you’ve stuffed it in. A Squirrel Dude toy is not for a beginner to puzzle stuffing, but can provide a nice challenge to dogs for whom a Kong toy no longer gives any challenge. The Squirrel Dude toys can be further customized by lopping off one or more of the rubber prongs with a sharp pair of scissors, so that you can adjust the toy’s level of difficulty.

To clean your dog’s Kongs out, use the cleaning brushes that can be used for baby bottles, or just scrub around inside the opening with your fingers. Kongs are dishwasher safe, but be warned that tightly lodged food can easily sneak through an entire dishwashing cycle. Make sure your dog’s Kongs are cleaned regularly to prevent food from spoiling.

Next week we’ll discuss Kong stuffing options, as well as other games to play with these toys.

Do you use Kong toys for your dog? Please share your favorite Kong stuffing recipes, games, or other tips and tricks in the comments below!