Friend of mine was getting mice in his camper and he tried the plug in repellers. This spring still had mice. I tried some in my garage and caught mice under the outlet they were plugged in to
We have had mice in farm equipment and tried Irish Spring, which they will chew on, poison, which you hope if they die its not in the truck and other things. Latest thing is a little bag that smells like pine and not sure how much it does but it does smell fresh lol. I guess we had one tractor they still got in but figured out how. They are annoying. One one of our combines they chewed the cloth insulation some of the engine sensor wires were covered in. Not sure why they want to eat that