1st camper we took only liquids and anything effected by the cold. Mice left us a tip in the form of mouse turds and pee. Anything that was soft camping chairs bedding in even stuff left in plastic bins(ate right through)they used. They loved the bar of soap and my grill. a weekend of cleaning and smelling like bleach it was clean. Following winter we pulled everything, the camper is naked like the day we brought it home. Bleached all food surfaces or where food was stored. Nothing, no mice no turd no pee. One thing though that throws this off is my co2 alarm chirped all winter too, unsure if that did it too.
