I found, by accident, that mice hate ozone. To clean up mouse smell in a treehouse I put the big ozone machine in it overnight. We found dead mice in the morning. So we put in one of those little fresh air machines that put off ozone and no more mice or bugs there and in the tornado shelter.
In a pickup I have stored I keep one of those cheap little air machines under the hood and not problems so far.
Ozone will compete with rodents on insulation and rubber.