My garage is pretty old (circa 1920), and has several holes in the wood sides near the ground. I keep the holes there because critters shelter inside during the winter.
They usually pretty much ignore it during warm weather.
Except for one hopelessly addled possum.
I started to wheel the lawn mower outside but something bumped underneath. When I tipped it up to look, there was a little gray possum hanging upside down, paws clasped around a blade. (I thought they just fainted when afraid.)
I didn’t really want to grab it since it might be inspired to bite. I definitely didn’t want to turn the lawnmower on. So I just shrugged, wheeled the mower back inside and gave a neighborhood kid 20 bucks to mow the lawn while I drank a beer in the porch swing. This proved so relaxing I just let the stupid possum live under the lawnmower.
I finally named him Jethro. He finally moved on–possibly to nest under a road grader or combine–but Jethro became my excuse for growing the economy, one teenager at a time.