1 Waterless urinal (Patented Cartridge) 2 No flush, residue & odour 3 Water-saving 4 Easy ... used between minus 20°C to plus 60°C with no malfunctionUrinals do not need any of water-supplying systems ... sealed productsCharacterized by no water flush after usage, no pungent smell in the urinal, no residue of urine, no scaling, having good ... half a year. Waterless Urinal with Patented Trap ( No Flush )