do you park the car in a garage?

Mouse trap until he's caught, and afterwards definitely dryer sheets man. i'm partial to bounce myself. After he's out, check all the body drain plugs to see if any have popped out or been removed as well as firewall plugs that might have been compromised for them to sneak in there. You'd be suprised how little of a hole they actually need to get in there.

i would put a few traps outside the car, i wouldn't want a mouse to get snapped in half on my carpet. Then i would put moth balls or actually dryer sheets in my car. Mice don't like the smell of them. I also heard that they really don't like the smell of mint. I store my car in a barn and i have never experienced any mice problems because i put dryer sheets in it and it does the trick.

If your snapping mice in half you need to use the next size down trap lol

Yeah, my car sits in a garage that is 1 year old lol literally brand new, but im gonna set two traps on my back carpets, and then a few around the garage, Ill get the bastard yet. haha

The disc ones don't make a mess :D

I had one get into my trunk somewhere along the way on my trip, saw it scurry away once as I opened the trunk. Put traps in the trunk with peanut butter and pulled all the food out every night for about a week, no sign of it or smell of dead mouse. After this long I think it must have gotten out.

I had a mouse problem last year. One hitchhiked a ride all the way to the fort devens autox with me and hopped out