Fixit: Invisible fences have pros, cons

Q What are the pros and cons of using an invisible electronic fence to keep dogs in the yard? Do they work?

A Yes, they work. But there are some downsides that you should consider.

Electronic fences, for those who are unfamiliar with them, typically employ: a wire buried in the ground, a transmitter in the garage or house, and a special collar worn by your dog. The wire, usually at the perimeter of the yard, sends information to the transmitter that relays a radio signal to the dog's collar. Typically, the collar sounds a warning when the dog gets close to the boundary, which teaches the dog to avoid that area. In some cases, if a dog gets close enough, it will get a small jolt.

These systems work best if you work with the dog and train it.

Pros:

• It's not unsightly; indeed, it's invisible.

• It's usually less expensive to put one on the perimeter of your yard than it would be to install a wooden or metal fence.

• Once trained, the dog won't leave the yard.

• After a few years of reliable behavior, the dog may no longer need the collar.

Cons:

• It keeps your dog in the yard, but not necessarily safe. Other dogs and animals can enter your yard freely, which may or may not be a good thing for your pet.

• If the power goes out, it won't work.

If you are considering one of these fences, it's a good idea to ask your veterinarian for an opinion. You might also ask the fence installer for references.