Abstract: A flytrap includes a container, a cap covering the top opening of the container, a support member supporting the container thereon, and a tray for receiving baits therein. The container has a bottom wall formed integrally with an upward projection at a central portion thereof, and a cylindrical surrounding wall so as to define an annular groove in the bottom wall between the projection wall and the surrounding wall. A liquid unit is received in the groove below the upper opening and includes a sterilizing liquid and an edible oil. The support member has a skirt portion fixed to the periphery of the bottom wall of container, and a plurality of vertical legs which have upper ends fixed to the skirt portion and which are placed on a floor. The tray is also placed on the floor under the skirt portion of the support member. The legs are located around the tray. Flies enter the container via the upper opening of the support member, thereby contacting the edible oil and drowning in the sterilizing liquid.