Using this automatic soap dispenser is a breeze. First, make sure it's fully charged using the included USB charger. Then, fill the 0.300 - ml plastic bottle with your favorite liquid soap. To get a portion of soap, you can either touch the top sensor or hold your hands under the spout. When it comes to maintenance, keep the dispenser clean by wiping it with a soft, damp cloth regularly. Avoid using abrasive cleaners as they might damage the plastic surface. If you're not going to use the dispenser for a long time, store it in a cool, dry place. And always make sure to keep it out of reach of children to prevent any accidents.