Invisible Fences: The Good, The Bad, and The Ugly

Many homeowners rely on underground, or invisible fences to contain their furry family on their property. Sometimes this choice is made because the property is quite large, and a physical fence would be cost prohibitive. Other times, it’s the community rules that prohibit physical fencing for aesthetic reasons.

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The Good

The only “good” part of using invisible fencing is the aesthetic. It allows for a large, open view, free of the choppiness of property fencing.

The Bad

When trained well, dogs wearing their fencing collars will remain on their property and avoid going near the designated property lines. Unfortunately, such “fencing” does not prevent other animals from coming onto the property, setting the resident animals up to be harassed or attacked, and possibly even dragged off property. It also doesn’t prevent humans from easily walking onto the property and stealing or injuring your beloved family member.

Even well-trained dogs may not be completely contained. If a dog is sufficiently motivated to get off the property – say to chase a squirrel or other critter – that motivation to leave the property may outweigh the fear of getting shocked by the boundary wire (Masson, et al., 2018; Polsky, 2000). This means that your containment system did not successfully contain your pet. And even worse, most pets, once off the property, are more scared of the shock than they are motivated to go home, and so become trapped off property, unwilling to cross the boundary wire to get back home. This leaves these dogs susceptible to unsafe interactions with other free-roaming or wild animals. It also increases their risk of being hit by a car.

I’ve also had several clients forget to remove the fence collar before taking their dog off property, forcing the dog to be shocked as they cross the boundary line. This can cause an association with going for walks or car rides, or interactions with the owner with the experience of pain and fear of being shocked.

The Ugly

These are the most important reasons why I do not condone the use of underground fencing systems. There is a significant increase in what we call “behavior fallout”. Behavior fallout refers to unintended behavior changes, usually increased fear behaviors or increased aggression displays.

With regard to underground fencing systems, there are numerous published studies showing links between the use of shock and a change in behavior from non-aggressive to aggressive (Polsky, 2000). Specifically, in each case, the dog was wearing a properly functioning collar inside the containment area and either in or near the signal field (where the collar will be triggered to give the dog a shock). The greatest risk to this increase in aggressive behavior was that the shock was completely out of context with the behavior the dog was engaged in – usually greeting someone (Overall, 2007; Polsky, 2000). For the pet parent, the important take-away here is that if the dog is wearing a fencing collar and approaches the property line to greet someone, maybe even a child, and the dog gets shocked in the process, the dog is likely to become defensive in that moment and may attack that person. Further, the dog may associate the approach of people with the shock, and may generalize this to many situations, making the dog defensive with all new people.

And the more sociable the dog is, the more likely this aggressive/reactive outcome is to occur. Why? Because highly sociable dogs are more likely to respond to the presence of a person near their yard by approaching to greet, maybe in the hopes of pets or a quick game of fetch. But they will get a shock for their efforts, and the association made will be that visitors are dangerous. Because we can’t control the type of visitors which happen by, we could be setting our dogs up to become defensive with adults, children, other sociable dogs, cats, delivery people, first responders, etc.

I have had client dogs have even broader fear-related responses due to the use of invisible fencing. In one case, after just the first time experiencing the shock near the boundary, the dog became so fearful of the entire yard, that the dog refused to go through the back door again and would not step foot in their large, and very dog-friendly back yard. Another client had an even greater fear response. In this case, the dog associated the grass with the scary shock. That dog refused to step on any grass, anywhere, and would only potty on concrete or dirt while avoiding touching any grass at all. It did not resolve until more than 6 months after the dog was moved to a new home, with another dog who was comfortable on grass. Finally, after 6 months of watching her dog friend run on the grass, this dog took her first tentative steps onto grass again. It took another 2 months before she was stepping on grass without hesitation!

In short, between the risk of unintended associations that can create increased risk of aggression, and the risk of extreme fear responses, I find that these units are inhumane and fail to consider the emotional welfare of our best friends. If your property is too large to be fully fenced, then fencing a smaller portion may be an option, even if it’s just a 10X10 enclosure for unsupervised yard time. A physical barrier keeps your pets safe from intruders and minimizes the risk of the dog being hit by a car. If fencing of any kind is simply not an option, then supervising outside time with the dog on a long line (50-foot line), or an overhead zip-line – attached to a harness with a back leash snap, not to a collar on their neck – is an excellent and more humane alternative than using shock to try to contain your dogs. You’ll still need to supervise to ensure strangers or random animals cannot harass or attack your dog. But, supervising provides an excellent opportunity to build your bond with your dog through play and just spending time together. A physical barrier is the safest option, and always my preference and recommendation.

If you have any further questions regarding the hazards of using underground (invisible) fence systems, please feel free to reach out to us for more information.

Many people think an invisible underground wireless electric fence is the best way to keep their dog in their yard. However, they are simply not as effective as you might think. Statistics suggest that invisible wireless electric fences are only about 70% effective.

What is an invisible dog fence?

An invisible dog fence, also known as a wireless dog fence, is a system designed to keep a dog within a predefined boundary without the need for a physical barrier. It works by using a wireless signal or radio frequency to create a virtual perimeter.

How does an invisible dog fence typically work?

1. Transmitter Unit: The system includes a central transmitter unit, which emits a radio signal. This transmitter is usually placed inside the home.
2. Boundary Area: The signal forms a circular boundary around the transmitter. The size of this boundary can often be adjusted to suit the size of your property.
3. Collar Receiver: The dog wears a special collar that receives the signal from the transmitter. As the dog approaches the boundary, the collar will detect the signal.
4. Warning and Correction: If the dog gets too close to the boundary, the collar emits a warning sound. If the dog continues to move closer or tries to cross the boundary, the collar delivers a mild electric shock or other type of correction, such as vibration.
5. Training: Training is essential for the dog to understand the boundaries and the warnings given by the collar.

Advantages of a wireless dog fence include its flexibility, ease of installation, and the fact that it does not obstruct views or require physical maintenance like a traditional fence.

However, it requires consistent training to be effective (more detail about this below), and some argue that the use of electric shock can be inhumane or stressful for the dog. Additionally, it does not prevent other animals or people from entering your property like a traditional fence. We’ll go into more details about the disadvantage now.

Do invisible dog fences work?

Here’s why using an invisible underground electric fence for dogs is not a good idea:

• While an electric fence may look invisible, its damaging effects are very visible, and generally increase harmful behavior over time. Dogs can become fearful or even aggressive because they are being hurt. This might make it harder for you to take your dog outside of your home at all, and can even cause dogs to bark or bite strangers because they simply don’t know who or what is harming them.

• Dogs can feel like they are being punished (by the shock) when they run and greet someone who is past the boundary line. That new association can lead them to believe that everything should be feared and nothing is safe. This new fear can easily turn into aggression.

• Invisible wireless electric fences do not stop other animals from coming on your property. If you live in an area where coyotes are common you can endanger your dog, because essentially your dog becomes a sitting duck. Invisible fences allow other animals to freely enter your property while your dog is restricted.

• Many invisible wireless electric fences do not include a transmitter that includes lightning protection, which means in inclement weather your electric fence might not work.

• Some of the DIY invisible wireless electric fence kits do not use wire that is rated for outdoor use and will simply short out after a few months.

• Invisible underground electric fences require a long training process. If you just install a invisible dog fence, slap the shock collar (receiver) on your dog, and then stick him in the yard to figure it out on his own – at best you’ll confuse your dog and at worst you’ll frighten him. If you want to create an area where your dog can run free without having to spend the 1,000 training fee that most invisible fence companies charge, get a non-electric dog fence kit.  

  If you just install a invisible dog fence, slap the shock collar (receiver) on your dog, and then stick him in the yard to figure it out on his own – at best you’ll confuse your dog and at worst you’ll frighten him. If you want to create an area where your dog can run free without having to spend the 1,000 training fee that most invisible fence companies charge, get aBecause it’s a real physical barrier, no training is required.

• At low levels the shock is too weak to stop your dog from leaving your yard to investigate nearby wildlife or another dog, and at high levels the dog may become scared or aggressive.

• If your dog is younger than 6 months old most veterinarians will tell you to wait before you you can install an invisible wireless electric fence, which means your pup can not run free and play. With a non-electric dog fence kit you do not have any age restrictions.

You might think at Pet playgrounds, we’re biased, but you don’t have to take our word for it. According to Victoria Stilwell of Animal Planet’s It’s Me or the Dog: “Dogs contained behind electric fences tend to become more reactive and in some cases more aggressive toward strangers and even family members because of anxiety and frustration. Recent studies show that dogs without previous aggression problems are more prone to attack family members when the systems are activated. Only a proper fence will keep people or other animals out of the yard and offer more protection. It is a much safer and more humane and effective containment option than an electric fence will ever be.”

So there you have it. Invisible fences are not the best way to contain your dog. Interested in why so many dog parents have chose our unique dog fence? Find out why in the video below.

What do you think about wireless, invisible dog fences? Use the comment section below where many have described their experiences. Join in on the conversation. Ask about our dog fence or build your dog fence kit here.