Knock their lights out. Keep the bugs away from your next barbecue without resorting to unsafe insect sprays with the Light "Em Up Amazing Bug Zapper . Four red LEDs light up when the button is pressed on the blue plastic frame. The handheld bug zapper is shaped like a tennis racket and kills insects on contact via an electric current when they touch the surface of the net. The zapper operates on two AA batteries and, for safety, activates when you simultaneously press the two buttons on its handle. The bug zapper is safe for either indoor or outdoor use; however, people should exercise caution when the zapper is activated as it will cause a shock. This is not a toy.