That’s why an invisible fence is an excellent ... try several remote training collars, wireless fences, and in-ground fences over the last ten years. Some have been excellent, and others not so much.

[Lou] sent in this amazingly simple hack that has been saving him money on special batteries for his dog collar. He uses an invisible fence system which gives the dog a shock if it passes beyond ...

$319.95 at Amazon The weight and shock level of some collars make them more appropriate for larger dogs. The PetSafe Stay and Play invisible fence is designed for dogs as small as five pounds.

An invisible fence is a cable that is installed around a specific perimeter, which uses a radio signal to pair with a specialist dog's collar. When the dog gets too close to the fence, there's a ...