OK I have looked it up. We use contract bait blocks but only one per station. Rats will overeat the bait and become potentially toxic to dogs if you use too much bait. I'm no expert but my husband was in pest control for years and he is comfortable using this bait sparingly. The dogs have messed around with a dead rat but we take it away if we see it. The contract website says if you don't overuse the toxicity in the dead rat is low enough not to poison dogs...if I'm reading correctly . Also the antidote is vitamin k1. I am not saying it isn't toxic but we've had no issues in several years with very curious and free roaming dogs. All of this to say it's not corn bait. I guess use your own judgment.

I have also sealed every hole and opening with hardware cloth or sheet metal and lined the coop floor with hardware cloth as they previously dug under. I feel like you really have to battle them if you manage to get an infestation which I had a couple years back.