Yea i found mice in my camaro last winter. it sucks. Put a bunch of bounce dryer sheets in the car, that can help. Put a battery tender on the battery or just take it out, although a battery can get weaker by just sitting there, so you should put one on anyway unless you want to buy a new battery. And be careful with fuel stabilizer, sometimes that stuff can do more harm than good. it can actually make your car not start. i didnt use it last winter, and the gas in the tank was totally fine. i also started it up every once in a while, partially because that can help, partially because i missed driving my camaro!