A waste disposal device including a sensing mechanism for delaying the rotation of a cartridge. The waste disposal device comprises a container defining a waste chamber for receiving encapsulated waste in a flexible tubing. The rotatable cartridge contains the flexible tubing. A lid is coupled to the device and is capable of moving between an open and closed position on the container. A rotation mechanism is operatively configured to engage the rotatable cartridge. A sensing mechanism is arranged to allow for delay in rotation of the cartridge until the lid assumes the closed position so that the waste is encapsulated in the flexible tubing after the closing of the lid, and after the subsequent twisting of the flexible tubing about the waste material caused by the rotation of the cartridge.