[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 ...

If you're considering an invisible fence boundary, we're helping by weighing the pros and cons of several common technologies after testing them ... a wireless dog fence collar that leverages ...

Finn was carried as a much smaller puppy, but now at 90lbs, he still insists on being taken over the perimeter every day.

$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.

The best wireless dog fences help keep your pups safe outdoors. We tapped a professional trainer to choose our top 4 picks.