I just used poison. I not only have dogs, I have dogs who chase and EAT rats. Never had a problem. I just used Just One Bite. It is not supposed to harm the animal that eats the dead rat. I understand that it can at high enough doses, but as I said, no problem here. I just stuck part of the stick of poison down each hole (they were in the coop; it is dirt floor) and covered it with a concrete block. Haven't seen a rat tunnel for months now.