Our barn cat is getting old and I have noticed an increase in mice around the coop. I have also seen rats on our acerage, but not for 3 years. We had poison out before because we had no animals to worry about. My question is if I put more poison out, (secured so my free range flock cannot get to it) since my chickens and peafowl eat everything in sight could they be harmed by eating a poisoned varmint who has randomely died somewhere within their reach?