+1 on the dryer sheets.

A Google search a few years ago turned up the dryer sheet tip so I figured, what the heck and gave it a try. I scatter 8 to 10 dryer sheets over the floor of my trailer and put several more in the cockpit and haven't seen a mouse since. The sheets seem to last about a year before they need to be replaced.

On Wednesday, February 27, 2019 at 9:19:15 PM UTC-6, wrote:
Got a friend that always stuffed anti-static dryer sheets in all of the "orifices" when putting the glider away. He claimed the smell was an effective rodent deterrent. Can't say that it worked, but he kept doing it. (ps. Right now my glider is hanging 12 feet off the floor in my hangar. Also a good rodent deterrent.)