OB Care FlushFree  Urinal Spray is to be sprayed onto the urinals and the surrounding area and floors below urinal pots at frequent intervals. It is recommended to spray every 2 – 4 hours depending on the load factor. This product is part of the FlushFree  Urinal care program, in order to convert any urinal into a waterless urinal, the OB Care FlushFree  Urinal Spray must be used along with the OB Care Urinal Drain cleaner. All that needs to be done is to disconnect the water supply and follow the recommended protocol.