News:
I've had charcoal under my cars for 20 years+ . Don't get me wrong I've had mice in my garages, but NEVER in any of my cars. BTW don't use the match light variety.... Now if there already infested your car, that's another issue entirely
I've heard that putting moth balls around in the car keeps mice out too! Now how many moths you have to catch to get their balls I don't know! But seriously I know a guy who swears by them he even puts them in his air cleaner and around his engine bay