2 things to rid yourself of pests.
First
Second and I'm not sure it works with mice but definately works with many other things like rabbits, and such.
Perferrably male hair clippings cause men don't die their hair (normally) and therefor the human scent is stronger. Sprinkle it around the outside of the barn/garage/deck/flower bed. Poof... like a stinky animal border.