problem with using a hot wire is that we have already tried that at the base of the pen when she was digging out and that never stopped her…we have also seen her hit the hot wire used in the cow pen at the trailer and that didn't phase her. Each time she has hit the wires nd kept going our first reaction us to check the wires and every time they have indeed been on and "HOT." We are working to secure the base of the pen as well as creating a cover to keep rain and provide shade while allowing a breeze and ventilation for the pen. In the meantime she is either in a borrowed kennel in the yerd directly beside the house that i can see from my room, in the house with me, or in the crate.