Meraj Ahmad of Bihar developed a machine, which captures rats, with a slightly different design and concept as compared with other traps. It has an electric circuit that gives an alarm when the rat gets caught. It has a dimension of 6.5”x 10” x 12” and operates on 4 cells of 6V each and weighs almost two kg. The cubical body of machine is made of wood, one side of which is for the entry of the rat. Inside the box, on the opposite end, is an iron plate, which is connected to one end of a circuit. To the other end is connected a metallic flap, which is located just above the iron plate. A piece of bread is kept between the plate and the flap. When the rat pulls the bread then the metallic flap falls on the plate and the circuit gets completed resulting in the alarm and closing of the entrance of the rat trap. The path for the rat inside the trap is zigzag so even if it wants to run fast, it cannot escape before the entrance closes. There are three switches of the machine viz. main switch for power, the trap switch and the release switch.