One of my cousins lives in the middle of a woods, and was having problems with the squirrels eating the wiring in his car. An auto mechanic told him to get one of the electric "pest away" things that emits a high-frequency sound, and now they keep one under the hood of the car at all times when not in use. They swear it works. My mom had a problem with rats and mice in her garage and got a couple, and it worked. So, get a couple of these with some long extension cords and try it.