lol a snake! good call,i read that using dryer sheets as 300zx said does work, also some urine of a predator to mice might work, but mostly you need to stop the mice from getting into the car some suggest putting car up on jackstands and putting mouse traps around the jack stands. the best method from my research is having a lift and storing car on that along with some traps, or get a "car bag" which is a huge bag you put youre car in with some silica gel(to absorb moisture) and you should be good to go for the winter, just remember to put fuel stabilizer in the gas tank let it run after you add the additive(to get to fuel lines ect) disconnect battery and remember to start it up and let it run to operating temperature every so often through the winter. one pet peeve of mine is people will store cars for years on end and not even crank them up thinking they will be fine...far from the truth a car is built to be driven! if its not ran every so often certain seals,gaskets, O-rings can and will dry out. for instance of the 95 grand prix gtp my dad had, bought it with low miles and was stored for about 4 years in a garage before he bought it, drove great, ran great for the first year then a lot of the plastic/rubber parts started to fail. eventually i lost brake pressure and couldn't stop the car from going into the back of a car(luckily it was a no damage accident)but of course it had to be a undercover cop in a taurus!!! yeah it sucked and now the cars in car heaven as it would cost more to fix then it was worth...maybe call some local classic car clubs in the area and ask how they store their cars and some tips/tricks about doing so to keep the car in great running and looking condition for years to come...hope i helped you out some!