Parking lot attendants can include people who simply coordinate where to park and how much to pay or they may also include formal valets, who will park a vehicle and keep track of the driver's keys while he or she is in the club. Some clubs require paid or valet parking to be used if keeping cars on the premises, to generate revenue and help regulate patron behavior. Bathroom attendants monitor the restrooms on behalf of management; primarily watching for policy violations and potential liability concerns. In strip clubs, policy enforcement can range from watching for drug use, sex, fighting, and other activities the club would prefer to see done off the premises. The attendant will also attempt to keep the restroom area clean, assist with the washing of hands, and if available, provide by request an assortment of cologne, mints, and other disposable items.