Among the comments there that it works in others not ... At first I found it small ... even too small ... but in fact, it's perfect for our mice (conventional size for mice!). I also say it was a little too fragile ... it's true that you should not manipulate them as a raw but not glass either! We caught 4 mice in our trash, but the 5th, impossible. So we bought this mousetrap and the first night in! They love Prince biscuits! We thought not to have so we ordered the trap after 4 days without outlet. To our surprise, we found that we still had 15 days-3 weeks. We handed the mousetrap and hop on the same night, another one! Positive, once a mouse is inside, it intends to "discuss" to exit and therefore it is released immediately outside of course! What is "damage" is that it does not catch a mouse at a time ... and in general it means a night. but in this case, you can put several.