This is one of our favourite multi-catch mouse traps, although we’ve never been able to pin it down to a particular maker.
The trap has a central holding chamber with a pair of entrance tunnel – one on each side and open at opposing ends of the trap. Each tunnel contains a non locking seesaw which swings down as the mouse walks up it. This exposes a small entrance hole, allowing the mouse to enter the holding chamber and reach the bait.
The seesaw then swings back, closing the hole and ready for the next mouse.