I have a rat bait station in my pond area, under my wild bird feeder. Haven't had them in the attic since I added it a couple of years ago. I used to have an auto-feeder for my dogs and I had a hefty rat and mouse population. They hit my attic, well them and some prairie voles, and ate my wiring. The snake I had apparently only ate my fish. So he went and the rodents aren't around too long. The bait I use won't hurt a dog, cat or hawk if they consume the rodent, and my dogs can't open the bait station. This is fenced well away from my chickens.