An underground dog fence consists of a buried wire, transmitter and dog collar with receiver. My husband stated significantly less depth than that was possibly not powerful sufficient to hold should a horse apply stress to the fence. The only good issue to come out of it (in addition to the man deciding possibly he should not attempt to retain horses), was that the horse was now so afraid of an electric fence he wouldn’t come with two feet of one particular. There are reports of dogs afraid to go out into the yard after getting exposed to an electronic …