Mouth mousetrap
This lightweight mousetrap consists of a set of plastic jaws operated by a coiled spring and triggering mechanism inside the jaws, where the bait is held. The trigger snaps the jaws shut, which can kill many rodents.
Live-catching mousetraps
Other trap designs catch mice alive so that they can be released into the wild. It is important to release the mouse promptly – as mice can die from stress or dehydration – and at some distance, as mice have a strong homing instinct. Survival after release is not guaranteed, since house mice will tend to seek out human buildings, where they might encounter lethal mousetraps or may be eaten by predators. In the wild, house mice are very poor competitors, and cannot survive away from human settlements in areas where other small mammals, such as wood mice, are present.