Peppermint is a great suggestion. Mice do not like mints and I make peppermint soap and put it down in my shoppe below the house. I have not seen a mouse in the 3+ years I have lived here and I live in the Ozarks with 5 messy kiddo's

The peppermint fills the air down there and I suspect it has been what helps our home stay rodent free.
I wish it worked for the racoons..lol