This winter we had trouble with mice in the vehicles that were sitting. Because we have 5 trucks, but we usually only use the main two in the winter because they get around better on the winter roads. And yeah every time we'd check the trucks we'd find papers or paper towels all shredded, I guess they were trying to make nests. I feel bad for them, it was cold...but they can go live in the hay and straw and keep out of our trucks.