7 months ago found a dead mouse on the cabin filter and couple of hand fulls of acorns in blower wheel. Pulled filter for inspection poop and nibbles on pleates. Can't find where they are coming in any ideas.
I have same issue but unable to know either how they entered in. My only suspicion is they come through unsealed areas surrounding the air inlet at the base of the front windshield. I thought about placing mouse traps undernearth the car other than guess how they get in. Sorry to hear you've experienced the same issue.