I have had or Had a chipmunk in my horse stall all spring and summer.I house my duck's in there at night and some of my bantam's roost in the rafter's at night.I also had 2 hen's in there with babie's and never had any problem's.I did clean out all the old hay and everything a couple of week's ago and didn't see any sign of holes or anything so maybe it just moved on.I would think they would pretty much be after bit's of scratch or feed.