Using this soap dispenser is easy. First, choose your power supply, either the battery pack or the A/C adapter. Then, fill the 70.5oz top - fill soap tank with liquid soap having a viscosity between 100 cps and 5000 cps. When you put your hands under the dispenser, the touch - free dual sensors will detect them and dispense soap. Keep an eye on the indicator light at the base of the spout. If it shows a low - soap alert, refill the tank. For maintenance, clean the exterior with a soft, damp cloth. Avoid using abrasive cleaners as they may damage the Brushed Bronze PVD finish. Also, make sure to replace the batteries regularly if you're using the battery pack. This dispenser is designed to be vandal - resistant, but try to avoid any rough handling. And remember, it's a non - returnable item, so make sure it meets your needs before purchasing.