The present invention relates to the field of poison-free traps for rats and mice, and in particular relates to traps for use on the ground. The poison-free rat and/or mouse trap of the present invention comprises a) a housing with a rat and/or mouse entry opening positioned in the side wall and/or in the bottom wall； and b) a mechanical and/or electrical killing device positioned within the housing. The killing means of the mechanical and/or electrical killing device is positioned at a level above the level of the rat and/or mouse entry opening, and wherein at least a part of the rat and/or mouse entry opening is lined with one or more rows of serrated protrusions.
