Using your Fart Ninja figure is a breeze. First, find a good spot to hide it where your target won't expect it. Once they get close, the motion - activated sensor will trigger one of the 10 realistic fart sounds. To try out the sounds without waiting for someone to come near, just pull the finger tab in the back. When it comes to maintenance, keep it in a dry place away from direct sunlight and sharp objects. If the battery runs out, you can easily replace it. Be careful not to drop it from a high place as it might break. Have lots of fun scaring and amusing your friends with these Fart Ninjas!