Hey all - haven't heard of anyone doing this...if you have, let me know. I had a rat problem last year, they had pretty easy access to the feeder and we used to put kitchen scraps in the outside pen. We had a bunch of rats running around, all fat and sassy. I shot a few of them, trapped a number, but I want 'em all gone. I built a new coop, higher up off the ground. It's very tight, biggest gap is at the people door, about 1/4". Moved all feeding to inside the coop and I haven't put in the chicken door yet. Here's my thought --- I want to make the chicken door 3.5-4 feet off the ground. Chickens should be able to fly on up to a perch outside the door, but from what I've read, rats can only jump about 3 feet high ("only"!) Whaddya think?