I’ve had a couple of underground electric dog fences for our dogs at different houses. They do work and can at times work very well. However, it is just as true that sometimes they don’t work well. Your type of dog(s), their size, the fence wire, the location of the wire, the type of terrain, the dog collar, and how you train your dogs are all part of “the system.” It’s not just putting a wire in the ground and a shock collar on your dog. Allow me to share a few ideas below.