Using this soap dispenser is easy. Just open the locking cover, fill the 20 - fl oz container with foam soap through the integrated funnel, and close the cover. When pressing the dispenser, you'll get a nice amount of foam soap. As for maintenance, it's designed to be simple. Clean the spout regularly to prevent clogging. Make sure the container is tightly closed to avoid spills. If you notice any issues with the dispenser, check the locking mechanism and the container for damage. Also, keep it in a dry place to prevent corrosion.