Chapped lips is right. Mice being prey want to be near cover so they tend to track along baseboards. Even better is a tube or small box with no ends (with a trap in it). Even a book or board angled against the wall. Peanut butter or apple has always worked for me in the old Victor-type traps, haven't needed to try anything else. I think apple works better but it's pretty close to a tossup.
Those electronic things definitely don't work.
