Two years ago some kind of rodent, presumably a mouse, got into my car while it was parked two nights at a trailhead. It chewed up a pocket pack of Kleenex, leaving shreds all over, and ate at least half the apple I had left in the car to munch on when I got back from the trip.

I never figured out how it got into my completely closed up car, and the garage where the car is serviced couldn't figure out how, either. I do know that another person reported the same thing happening at the same trailhead the week before. Since that time I've carried a small ice chest to store my "coming out of the wilderness" snacks!
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey