No, its bounce sheet OR moth balls.
If you are going to do moth balls, there is no need for bounce sheet. Mice hate the smell of mothballs. So will most of your passengers and potential admirers. Nothing worse than driving in what smells like an old persons house. The mothball smell never really goes away even years later once you have put a few inside. The people who say otherwise are old. Old people like mothballs.
Mice also hate the smell of bounce sheets, but most people like it.
Bounce sheets are for people (young and old) who hate the smell of mothballs
For some reason mice do like the smell of no name brand dryer sheets. They make their nests out of the no name ones.
I throw a few bounce sheets in ever compartment in the car. I even toss some around on the floor of the garage.
Don't worry about using too many. Use lots. Just remember to retrieve them from engine compartments before start-up
You could use traps and poison around the perimeter of the garage as well. Just be careful to warn any old people who may be doddling around collecting old dryer sheets to re-use....
