Using this Bobrick foam soap dispenser is easy. First, install the 4 alkaline 'D' cell batteries into the dispenser. Then, insert the 800ml foam soap refill. Once it's set up, just place your hand under the dispenser and it will automatically dispense foam soap. When the soap runs out, simply replace the refill. For maintenance, keep the dispenser clean by wiping it with a soft, damp cloth regularly. Avoid using abrasive cleaners as they may damage the dispenser. Also, make sure to store the batteries in a cool, dry place when not in use.