I have always had a problem with chipmunks where I live (edge of the woods& hilly). But now that I have chickens and it's fall, I see the buggers brazenly running into the chicken yard & coop to fill up out of the hens' scratch and feed. Ticks me right off! They even run into the open coop! Does anyone have any tricks for keeping them out of the hen house & yard? I'm ready to poison them but I'm afraid they'll die in the yard & the hens will try to eat the poisoned carcasses. The hens occasionally run them off but they come right back. There is no way for them to get in/out the coop except for the one door and the chickens have to have their food! Aargh. Can they hurt the hens at all? They are RSL & RIR.