QUIET as a mouse??

So I got Benny & Buster the other day, they're mice. They have been fighting all day long, I think they're playing, because nobody gets hurt, and they still drink water together and they sleep cuddled up together. It's a flurry of flying, squeaking mice in that tiny little cage. They run up the sides and on the ceiling and all around in there, and along with the flying mice comes flying bedding and food, so that leaves a mess. But I really like them, and Matthew does too. I won't allow them to play with the hamsters because I just don't think that would work...