I tried moth balls, some mouse repellent stuff, poison (they died in the walls, really stunk) and the only thing that seems to work is the old spring trap with peanut butter.

If you do get a live trap please take the mice miles from any houses or you'll just be passing your problem on to someone else. Since we live in the country we often get dogs dumped on us. I guess the owners don't want to feel guilty about putting them in the pound but letting them starve or freeze is OK. I don't understand people.