A major advantage of this urinal pad is the saving in water usage that can be achieved without having to replace the current water-based urinal with a"waterless"urinal.The formulation of the urinal assembly is completely water soluble and will not clog drains. Most urinal use approximately 1.5 to 1.6 gallons per flush - based on an average of 25 flushes a day, about 37.5 to 40 gallons of water per urinal per day are used. For the average 30-day month, that amounts to 1,125 to 1,200 gallons of water used by just one conventional urinal! Using Ernie's Water Saver Urinal Pad and turning off the water, witch effectively converts the conventional urinal into a"waterless" unit (or at least a water-conserving urinal),can mean a savings of up to 13,500 to 14,400 gallons of water 1 urinal 1 year!