Keep in mind, dryer sheets and/or moth balls (did you spread its wing to sniff them?!?!.....dad joke....) are supposed to be a deterrent.
When they run out, or rodents can't smell, a mouse/Chipmunk/mole can fit through a dime sized hole, rats can get through about a quarter sized hole.
Keeping them away is good.
Keeping a food source away is also good.
Keeping them out if 1 & 2 fail........sorta problematic. There are quite a few small holes underneath most aircraft that rodents can get through.

Taken from someone that has dealt with this and has a major consultant in the pest control industry as family. I have asked these questions before on other applications.