I use these in my basement. I have a sump hole and there are always creepy crawlers around it. I have caught several mice in mine when I didn't even know that I had one in the house. I do keep the door securely closed so that my pets don't get into one of these. They are safe around pets, but if they get caught in them, it is very hard and sometimes painful to get them unstuck. For the price, these are great pest control!