I was cleaning up my pull behind manure spreader and found this when I opened up the side that houses the gear box. 5 mice total and packed with nesting material. I reversed the hose on my shop vac and blew them all out into the cold!
Why not use the shop vac to capture them, then let them go someplace a long way from barn or house? Or sprinkle a little Decon near the nest and let that take care of 'em. Otherwise, they'll just get into more mischief...