Underground fence for dogs is of electric type and the wire buried under the ground. Installation of this type of fence is mostly by a professional though there is a manual tool kit for a wireless electronic dog fence that can aid the owner to do it himself so that he can cut down on costs.
The underground wire fence comes in a wire, collar, and transmitter box that forces radio signals through the wire. The dog wears a collar anytime he is outdoors and if he wanders close to the buried wire a beep tone will sound or electronic shocks administered to make him retreat. The electronic shocks sent are mild though there is a collar option for tone as a warning signal for pet owners concerned on their dogs getting shocked. The price of the whole system depends on the size of the yard, as a bigger yard requires a longer wire.
The only limitation of the fence is that, if the dog crosses the boundary he will be reluctant to return to the safe zone since the warning is only sent when the dog is approaching the underground wire.
For efficient working of the fence system, the dog has to train effectively. You have to train the dog for a period of two weeks or even more depending with how fast the dog adapts to the system. You can use a trainer to train your dog but if you want to do it by yourself, you will have to be very patient and follow the training guidelines provided by the manual. Before comfortably releasing your dog to underground dog fence, it is advisable to ensure that the dog knows how to respond to the system. This aids in ensuring that the dog runs around the compound not lying all day by the dog step since he has been affected psychologically by the fence.