The body count has yet to mount down here on the NH Coast. Last year many body bags were filled. The snap traps, weapon of choice, rarely get re-used. Carcass and trap go into a plastic shopping bag thence into the trash after which the area is sprayed down with a solution of bleach and water (flea an tick prevention).
( I use peanut butter on the traps, let the condemed mouse have a hearty meal as with those traps it is sure to be ). I also have begun to enforce a no bird food storage zone in the garage.
I was forced to undertake this campaign when I took the 'Cuda ('68 Fastback) out and discovered a nest in the headliner. Not a pretty picture nor smell. We had lost our last mouser that winter and apparently things just got out of hand. Prior to losing the ***** gato there had never been a problem with mice inhabiting the garage.
There are also moth balls in onion bags all around the garage, so much so that the place is starting to smell like a maiden aunt's closet, but, so far, it is working .