An e-fence, or electronic pet fencing system, can be an ideal solution on it's own, or combined with a physical fence to provide a double layer of protection. Many consumers simply refer to this type of fence as an 'invisible fence'. However, 'Invisible Fence' is a name brand of Invisible Fence, Inc., and should be used only in reference to that specific company. PetSafe provides a nice resource site that gives indepth information and the pro's and con's of static stimulation at TrainMyPet.net.

Although there are several brands and models available, all of the systems work in much the same manner. A transmitter is mounted on a wall, and a boundary wire is attached. The wire goes out to the boundary of your property, encloses the property, and eventually works back to the transmitter. In other words, the wire makes a continuous loop that begins and ends at the transmitter. Contrary to popular opinion, the wire does not carry any electrical current. Instead, it serves as an antennae and 'broadcasts' a low level radio signal that is received by a special collar that is worn by your dog. The collar then issues a warning tone or vibration, or a low level static correction to alert your dog to the boundary of the yard, depending on what type of system you own. With proper training, the dog learns to retreat back into the safety of your property in response to the collar stimulus. These systems are very effective, and allow your dog to freely roam in a specific area outdoors.

Costs for e-fence systems range from about $100 for a simple 'do-it-yourself' system to over a thousand dollars for professionally installed model. In our experience, most homeowners can easily install a system in a few hours, and can properly train their pet to use it in a week or two. As for the actual installation, it is not as much 'brain' work as it is simply labor intensive. A few yard tools, such as an edger or flat-edged shovel, can greatly reduce the amount of time required to install a new system. Most all manufacturers include DVD's that cover installation and training, and offer toll-free 'help lines' should you need to talk with an expert about your specific situation.

PetSafe makes a 'Wireless Instant Fence' (PetSafe IF-300) that eliminates the need for wires or installation. However, that system is limited to relatively flat areas, and the shape of the contaiment field will be a circle. However, if your circumstances fit the strengths of this system, it may be an excellent choice for you.

As stated earlier, e-fences may also be integrated into existing physical fences. This is especially helpful in countering such pet antics as digging under or jumping over the fence.

Not all breeds respond well to e-fences. Some aggressive animals, as well as breeds with a strong hunting instinct, may ignore the stimulus from an e-fence. Also, while an electronic fence may do an excellent job of containing your pet, it will not prevent other animals or persons from entering your pet's 'space'. In these cases, a physical fence or pen would be the only option for containment.