Using and electric fence for chicken coop is the best way that you are able to keep the chicken safe inside and the predator such badgers and foxes out. If you already have the fence but which fails keeping foxes out, the answer is to add the insulator on the fence. The fence should be not too low to avoid touching the grass but also not too high so that it can stop the predators especially these that dig. The electrical fire should be found at different steps, the ground wire, a high nose wire and a waist high wire. If the first wire cannot stop the fox, the nose wire or the third wire will stop it.