Quote: I have a buried pen skirt on the existing coop, which is what has kept them safe there for the past 2 years. Can't do the electric fence on the other person's property. We have recently purchased our own home, and are currently building a new coop. The pen skirt will be buried 2 feet, and extend 3.5 feet out from the coop. I have already purchased everything needed, and will have an electric fence, as soon as the new coop gets built. The large hole was about 5 feet out from the coop, past the pen skirt. Today I put lots of mothballs out past the pen skirt.