Cats are ok but they just kill the ones they catchG—D—- it. 12ga.!!! Don’t open the garage door? Had a dead chipmunk in a pile of clean shop rags 2 yrs ago. All these rodents come in wherever they can. Cats have to be the best deterrant.
It's a bit late for it now but if you ever have your front fenders off put screens over the cowl drains. While restoring mine I looked for areas that would allow them to get inside, that's all I could find and have never had a mouse in mine.
Peppermint oil works well.Pure peppermint oil (you can buy it online) soak cotton balls in it and place them in a open cup, works. Mice can't stand the smell.
That's not my pic it's just an example
I usually use a wire coat hanger and run it through a coke can as a roller
If you don't want to kill them a bottle trap works really well also. Or a bowl of peanut oil
D-con pellets are not available at the local Home Depot or Lowes here in New Jersey.
Looked on E-Bay found people price gouging on the 4 pack of 3 oz pellets.