Ok, I was looking more for something that wouldn't require me to stand guard constantly. Porcupines cost me $2000 in damages to my vehicle last year. This year, we broke camp before they did that much damage, but they STILL chewed through wires, the goose-neck to the gas tank, brake lines, and power steering lines. We tried throwing mothballs under the vehicles, and also ammonia under the campers. It seems to have deterred them for a brief period, but like I said, they have an appetite for Mopars! If it is rubber or plastic, they seem to be determined to chew it! Help would sure be appreciated! I don't want to give up my camp site!