I found a chick, who is inside a 4-story wire cage with 5 others, with his insides...out and pretty hollow inside. I checked around the cage and under on corner, it looks like a place that something could've gotten in and walked up the ramps that lead to one of the top floors that the chicks live on. I thought I had sectioned off only the first top floors for the chicks, but I guess rats are determined enough to get through my barriers. Today, until I figure something else out, I stuffed the ramp below the chicks with a rolled up feed bag and then put a flattened cardboard box on top of that. My question is...is there a rat poison that I can safely put down or around that won't hurt the chickens? I'm guessing not. What happened a few months ago was that the cat who used to live outside and kill all the rats, got taken away by an over zealous cat shelter person, so now the property is over-run with rats it seems. This isn't my property, or I'd get another cat; I've taken over my dead neighbor's chickens and I just got through having about a dozen chicks hatch over the past month, so I've moved some of the older ones back down to her coop.