I use that poison all the time, and never ended up with one of the dead mice in my woodshed. I wanted them gone, because when I left them alone, I had copperhead snakes move in. But once I had something in there that was gobbling up the poison. And also chewing up gloves, both rubber and leather. It went on for weeks. So I went out and bought a live trap and put some of the poison bait in it. The next morning I had the little devil in my trap, but it wasn't one of those ugly Norwegian Rats.
It was a large, but rather elegant looking critter. Slim and trim and longer legs. I sent a picture to a knowledgeable friend who identified it as a wood rat, a type of rodent that didn't require human garbage to live on. I took him out the woods a mile from my house and released him into the wild. I hope he was OK, because that rat poison is nasty stuff. Hence the rubber gloves in my woodshed I used to handle it.