Using this Bobrick B - 8231 manual foam soap dispenser is easy. First, fill the 20 - fl oz polyethylene container through the integrated funnel on top. Then, mount it on your counter. When you need soap, simply press the dispenser. Remember, since it has a vandal - resistant locking cover, keep the key in a safe place. For maintenance, regularly clean the bright - polished spout, cover, and escutcheon with a mild cleaner. Check the container for any residue build - up and clean it if necessary. The high - impact - resistant ABS body and shank can withstand a lot, but avoid hitting it hard to prevent any damage. Also, keep it away from corrosive substances as it may affect its corrosion - resistant properties.