Abstract: A disposable cartridge assembly is provided for use with a rodent trap of the kind having a movable spring-loaded striker bar operable in response to a trigger mechanism. The disposable cartridge with a generally flat base and a flexible sleeve with a rigid opening at least at one end is mounted on a rodent trap so that the sleeve is disposed adjacent to the trigger of the trap. The rodent enters the sleeve and activates the trigger to be trapped. The entire cartridge assembly is then disposed.

Abstract: A baitless rodent trap is provided with a removable cartridge and disposable sleeve. A trap member with spring means, trigger, and striker means has a flat base, the base including, on the trigger end, means to receive a removable cartridge. The elongated cartridge includes toroidal collars on opposing ends. A sleeve is provided to stretch between the collars to form a tunnel. The cartridge is then attached to the trap member's base to form a T with the base. The cartridge sleeve is placed along a wall. A rodent enters the tunnel and contacts the concealed trigger which springs the trap. The sleeve or the entire cartridge and sleeve are disposed of with the rodent.