My daughter put poison out last year, but didn't shove it far enough into the rat holes, and I ended up losing a few chickens. So I'm hesitant to try the poison route. We're having rat problems now- I'm going to go buy traps. I know the rats won't generally disturb the birds, but they do eat feed and they can definitely help themselves to eggs! My daughter just moved the tractors her silkies and Japanese are in, and found nests underneath with a bunch of eggs hidden away. She wondered why the egg laying seemed so low lately! We have dogs that love to find varmints, but I think the rats just move from tunnel to tunnel, so the dogs haven't had a whole lot of luck digging them out. They sure love to try, though!