I don't know about dryer sheets, but moth balls last for many years when double bag zip-locked for next time. And they won't make nice bedding material when the fragrance is lost.The little critters don’t like dryer sheets either. The cheaper and more fragrant the better.
On the NA engine it is for noise abatement, specifically the elimination of certain frequencies emanating from the intake.........
Side note: Anyone understand the engineering behind the multi-chamber stock air intake box?
Here’s a great tip we got from a dealer several years ago when they found the rattling in my wife’s car to be from rats storing food in the engine compartment. Dryer sheets!I've noticed mouse poison pellets in my Sky air cleaner. After vacuuming it clean more appear weeks later? Any suggestions on how to prevent mice from making my Sky engine their home?
Our boxer puppy Indy brought an Opossum in the house via the pet door. Woke up to the dog sleeping in his bed with the Opossum playing possum.I generally prefer repellants to poisons to protect cars. Dead animals are not a lot better than live ones when they are somewhere you don't want them to be. And cats on cars can be a nuisance too.
Rat poison or cats.
My BMW X5 sat outside for a while unused. One day I went for a drive and opened the hood to remove the battery tender and there was a raccoon sleeping on the engine cover. He just sleepy-eyed looked at me while I went about unhooking the tender. Finally I looked at him aid said "you've gotta go" and he slowly got up and walked off the side of the fender. Oh the casual nerve! ha ha... He looked cuddly and friendly but I knew picking him up would have been a bloody mess. I considered bars of rat poison but he seems like a friendly fellow so I ordered an optional underbody panel that will keep him out. Oh, I also ordered the $200 hood insulator he clawed to shreds making himself a nest. He's lucky I'm a nice guy or he'd get the business end of a suppressed .22LR with 60 gr subsonics and NOD.
Imagine if I hadn't opened the hood before driving off. ha ha ha