I'm looking for solutions for mice and rats. I had the mice nicely under control using bait stations. Now I have rats in the chicken coop. I've fixed the area under the door where they were coming in with hardware cloth.; my coop is on a cement foundation and I don't see that they're getting in anywhere else. I've installed a sonic repeller in the coop, so will see if that works to keep them out. But I'm trying to cover all the bases and would like to get them off my property altogether. I have a bait station for rats but after two weeks, the bait hasn't been touched. Now I'm reading about all the risks of using poison or bait (poisoning other animals if they eat a poisoned rat/mouse, the possibility that it could die inside a wall somewhere). It's a bit discouraging. I'd been doing so well, with no rats on the property until now even though I've had chickens for the last few years. Has anyone had success with sonic repellers, as far as driving rats and mice away altogether?