We had a mouse last year.It got in through the power cord opening.Didn`t know he was in there until we took him camping one weekend with us. The wife and I figured it out but we didn`t dare tell the teenage girls.The wife left water in the sink overnight and the next morning I reached into the sink to drain it. Guess what I pulled out instead of the drain plug? You guessed correctly. The dead bloated mouse.And yes it caught me off guard and I yelled "Holly Sh*t"! I used to keep power hooked to it all the time at home.Not anymore.But when I do I always make sure nothing is getting in through the cord opening. We`ve been mouse free ever since.Kind of a long story,but it was really funny. At least the wife thought so.