Our 'double entry' mouse trap is low-line so it can sit under furniture or out of sight. There is an entry each side. As the mouse walks in the entry the floor drops down and lets it through. The floor then rises up again preventing egress. The trap is all-galvanised, but the top is clear plastic. This serves to encourage other mice in as soon as one is caught inside. (Mice like to socialise in small places.) It also allows view of bait, and allows you to see when it needs emptying. Lid opens for baiting and exit of mice. Dimensions: 26cm long x 16cm deep x 5cm high.