Trap for mice and rats comprising two legs (1, 2) with jaws (9, 10), where one leg (1) is horizontally moveable towards a fixed leg (2) via an intermediary link (5-8). The fixed leg rests on a base-plate (3) and has a cover-lid (4) at the top. The legs (1, 2) are fitted with grip handles (11, 12) at the opposite end. The jaws (9, 10) are acted upon by a draw spring (22) or spring clip (31), whose direction of force works near the fulcrum of the legs (1, 2) in the open position of the trap. The closing movement is triggered by a bait-carrier (17, 18) with lever (16) fitted between the legs (1, 2), and which is flexibly suspended at the back. Its reverse movement is stopped by a stop device (26) behind the grip handle of the fixed leg. The bait-carrier (17, 18) can move in several directions, upwards, downwards and outwards. The bait can be mounted in and under the bait-carrier (17, 18, 28). If the bait-carrier (17, 18) is moved from its position in any direction of release, the draw spring (22) is acted on, or on a pin of a crutch (19)fitted on the lever (16)on one of the legs with sliding surfaces (20, 21) inclined towards each other, which partially enclose the spring (22) or the pin. Emptying or loading is carried out in one operation.Linvention porte sur un piège pour des souris et des rats comprenant deux pattes (1, 2) avec des mâchoires (9, 10), une patte (1) étant mobile horizontalement vers une patte fixe (2) par lintermédiaire dune liaison intermédiaire (5 à 8). La patte fixe sappuie sur une plaque de base (3) et comporte un couvercle (4) au niveau de la partie supérieure. Les pattes (1, 2) comportent des poignées de préhension (11, 12) à lextrémité opposée. Les mâchoires (9, 10) sont actionnées par un ressort de traction (22) ou une attache à ressort (31), dont la direction de force fonctionne à proximité du point dappui des pattes (1, 2) dans la position ouverte du piège. Le mouvement de fermeture est déclenché par un porte-appât (17, 18) avec un levier (1
