Tuesday: The battery-operated one I had REALLY worked, we stopped counting the deceased after a week, it worked so well. And no poison. I think the brand name was "Victor"(?) - it was a black box, 6"x4", and it even had a light that let you know when you got one. Best part was only a couple seconds and that was it, no noise, no long-term suffering - other than the "humane" ones, it was the best we could do