This HQ electronic flyswatter kills mosquitoes, flies, wasps, hornets, and other flying insects. It works on two AA 1.5 V batteries, making the voltage high enough that it immediately kills insects that touch the grid. The flyswatter is equipped with a safety grid and the output power is low enough that it absolutely does not put you or your pet in danger. Step 1 Place the batteries in the battery compartment according to the polarity markings. Step 2 To kill an insect, press the button in the handle. A red light will light up to indicate that the flyswatter is working.