Mice...

So I've had some issues with mice and my cars before. Not the usual making a mess, eating stuffing and headliners, stinking the cars up.. that I consider part and parcel with older cars... I'm having other issues:
In the space of 8 hours mice filled the bell housing of my daily driver Neon with acorns, and when I started the car and moved it the cutch froze disengaged...
That was some years ago.
I've had them get into the air intake on my farm tractor.. .at least the air maze caught it before it got sucked in but the cleanout was not pleasant.
I now install grills on every hole and air intake on the vehicles.
So now, my daily driver LHS has a glitch. About 2 weeks ago I was driving and smelling popcorn, or something similar. Then it changed to burnt microwave popcorn. Now it's burnt popcorn and burnt coffee... The little bastards filled my muffler with acorns that only burn off when the load is enough to get the heat in the muffler up. Friday last week I thought I blew the engine due to the smoke that all of a sudden began to billow from the car during the ride home (80mph, left lane, 3mile slight uphill...). I've got an emission test on Friday for it. What are the odds it passes??!!!
Little bastards!