Enov W078 FreshWave Citrus Urinal Channel Blocks are specially formulated urinal and channel blocks (PDCB Free). Suitable for use in all types of urinals, especially where safer cleaning materials are required, such as institutions, schools and public buildings. Each time the urinal is used, water softening and cleaning agents are delivered into the trap to clean and maintain the pipework to prevent odours and blockages. Features & Benefits - Each cube weighs 20g. - Non-PDCB channel blocks have a high perfume content and neutralise odours from urine, tobacco and sweat. - Blocks are water soluble, so won't block outlets. Comes complete with storage bucket. - Non-PDCB urinal blocks contain no Paradichlorobenzene and are fully biodegradable. - Fragrance: Lemon - Colour: Yellow - Size: 3kg (approx 150 blocks per tub).