They aren't bothering anything that I can see. They opened an old bag of walnuts on a shelf that needed to be thrown out anyway, and they also chewed into a bag of dried white beans, but discovered that dried white beans really aren't good to chew on. They haven't left the kitchen.
But I don't want them to bring their friends or multiply, and it's not fun to have them come shooting out across the floor when I turn on the faucet. I really don't want to trap and kill them. Any ideas?