Using these Harry Potter string lights is easy. First, get 2 AA batteries (not included) and insert them into the battery compartment. Once the batteries are in, the lights will turn on. You can hang the lights anywhere you like, such as on a wall, in a window, or around a mirror to create a magical atmosphere. Remember not to expose the lights to water as it may damage the LED bulbs and the battery compartment. When not in use, remove the batteries to prevent battery leakage. To clean the lights, use a soft, dry cloth to gently wipe the glass bottles. Avoid using harsh chemicals or abrasive materials as they may scratch the glass.