Mice nests in heater/ac ducts, are a whole other story! Nothing sucks worse than to turn on the A/C and get a face full of mouse pee soaked nesting material...and the stench never really ever goes away...
A mouse got into the heater blower in my camper, then it turned on. Made an awful sound and the blower has a timed shut off when you turn it off. Surprisingly, it only beat the crap out of the mouse, but no blood and guts. That happened twice.
Taking it apart at 3:00am while its freezing cold out was no fun.
