The Kleen Screen is a plastic urinal screen featuring an integral odour neutralising perfumed urinal block that gradually dissolves with use over approximately 30 days. The screen is designed like a web to catch any debris that may fall into the urinal such as chewing gum, cigarettes, paper etc and the fragranced block stays firmly in the screen until fully dissolved helping prevent blockages or ostructions to the normal flow of the drain. Once the block has fully dissolved the screen requires replacement.