Para Block & Screen Urinal Deodorizer, 4 oz para block, Cherry Scent, 12 BX

Para Block & Screen protects urinal drains from debris which can result in costly repairs. Screen contains a 4 oz. para urinal block with a cherry fragrance that deodorizes consistently for 30 days. Para block is air-activated so it won't dissolve in water. After 30 days, reuse the screen to reduce waste and replace the para block.