We have mice in the walls and I put bait down that did not work. I called Green Pest Solutions and they came out and left bait stations. It's not a nice thing, but I'm already noticing the decreased sounds of mice, and that odor that comes with it. That's not a nice thing but a sure thing that it's working! I don't want to move my bird feeders away from the house, but if that's what I need to do to keep the mice away then I will!