late 1930s in the United States and in the United Kingdom from the 1950s, and by the late 1960s it was unusual for toilet cisterns to be visible in public toilets. In some buildings such as schools, however, a cistern can still be visible, although high-level cisterns had become outdated by the 1970s. Many schools now have low-level cisterns. Hand drying options An option for hand drying is usually provided next to the sink. This can be either a paper towel dispenser (sometimes they have auto-sensors for touchless dispensing) or a mechanical hand dryer (used manually or with auto-sensors). Drying of washed hands is important for convenience but also because wet hands are more easily recontaminated. Paper towels are more hygienic than electric air dryers. Other fixtures Public toilets by their nature see heavy usage. Some high-vandalism settings, such as beaches or stadiums, will use metal toilets. Public toilets generally contain several of the following fixtures. In the lockable cubicle (stall) Toilet cubicle door Toilet with toilet seat; whereas a home toilet seat has a lid, a public toilet may or may not, and may not even have a seat Toilet paper, often within a lockable dispenser Coat hook "Pull-down" purse holder Sanpro bin for menstrual products; this may be classified as clinical waste and be subject to special regulations concerning disposal Dispenser for flushable paper toilet seat covers Toilet cubicle door lock sign (vacant/engaged). Vacant is marked green, while engaged is marked red At the point of handwashing Faucets (taps), note some are at a lower level for children and wheelchair users Antiseptic handwash dispenser or soap dispensers, pump bottles or auto dispensers (not commonly supplied) Mirror (usually over sinks) Waste container / rubbish bin Elsewhere Urinals (almost exclusively in public toilets for males; although see female urinal) Vending machines dispensing condoms, diapers (nappies), painkillers, energy drinks, perfume, breath mints, facial tissue, confectionery, undergarments, swimwear, soap, sex toys, or sanitary napkins or tampons Air fresheners or odour control systems Infant changing table, often fold-down (usually in women's rooms, but increasingly also in men/s rooms) Sometimes showers are also present, often with soap, shampoo, or similar dispensers (often at truck stops) Cleaning, maintenance and management Thorough cleaning and maintenance are important for public toilets. This task is usually performed by a "public toilet attendant" (who is there during an entire shift) or by professional cleaning staff. They maintain and clean