OK laugh if you want. My quads share the pole barn with a half dozen chickens, and along with the chickens come mice. Lots of mice. I've gotten tired of cleaning chickenfeed and sunflower seeds out of the airboxes. Bigger fear is the tailpipes, I always seem to be forgetting to put the orange rubber plugs in the tailpipes. A little hardware cloth, grinder, and soldering gun. Like I said, laugh if you want, no critters crawling up my tailpipe now....