Now that winter has arrived, some of you have your RV sitting in a covered garage somewhere. And hopefully it's not serving as a winter home for unwanted guests like mice, rats, and squirrels. Rodents are notorious for chewing through vehicle wiring, plastic and rubber lines. They also leave a big mess behind, defecating on counter tops, floors, and even in beds. If you haven't taken preventative measures to keep rodents out, y...