Many people have suffered the wrath of field mice that have chewed wires....... In a fashion I am lucky. I have a good garage, only park one vehicle outside (all the time) and the BEST secret weapon I have .......... BARN CATS!
I provide a small shelter with heat for the barn cats, we feed them off brand cat food and have been doing this for years...... I have been "gifted" dead mice and voles over the years. The cats also enjoy the shelter of a warm truck.
When the cats are not around they hang out in the dairy barn accross the road. I have watched cats eat alongside racoons, opossums, skunks and red foxes The blue jays and cow birds wait for the cats to be away and snatch a piece of cat food too.
I have seen people spend money on mouse repellants but cat food is my solution