One type of dog containment system is the wire dog containment system. This system consists of a wire buried underground around the place to be contained. Flags are placed in strategic locations to give you and the dog a visual reference of the location of the perimeter.

This wire of the wire dog containment system is combined with an electronic containment collar on the dog, which has a receiver that detects when the dog is getting close to the wire. At this point, the receiver emits an audible warning sound. If the dog keeps going towards the wire, then the collar emits a mild electric shock that only gets the dog