cat friendly pest control

i'm moving into a new apartment that is apparently known for it's mouse problem. i'm looking for some ways to minimize this problem.
i've got peppermint teabags lying around, steel wool stuffed in visible holes, and cat safe traps in my bathroom.
i was wondering about those sonic things that you plug in and the sound bothers mice. does this effect other animals as well?


i want my little edie to be comfortable as possible