I've been having an issue with mice getting into the feeders at night in my chicken run. I dont like the idea of them eating my feed and also peeing and pooping in it. I'd been noticing mouse poop in the mornings and before letting the girls out I'd have to try to clean it out which was such a pain. I didn't want to use poison around the coop or run for fear of the chickens getting hold of a dead mouse that had eaten the poison. I tried glue traps under the feeders and I'd still find mouse poop in the feeders. So finally my husband had a great idea of penning our two outdoor cats in the run at night. So far every morning when I let the cats out of the run and the chickens into the run I've found dead mice. I figure it's time the cats start working for their food anyway. This has worked perfect for us and the cats dont seem to be minding at all.