I keep my chicken supplies in our detached garage. I was out there yesterday and saw that I'd forgotten to put the lid back on the trash can I keep scratch in. I went to grab a handful of scratch for the girls (and to replace the lid), and found a little mouse inside. Evidently it had gone in to get a meal, but of course then couldn't get back out. Being the sucker that I am, I let him out onto our storage shelves out there and he scampered away in a heartbeat. I rarely see mice around our place, maybe because we have two good mousers (have seen plenty brought to the patio door dead). So I'll use that as my excuse for feeling badly for the little guy and setting him free... Have you done things like that too???