These Jeyes Urinal Channel Blocks are made from detergent based formulas that clean at the same time as giving off a pleasant aroma. The specially formulated mixture contains odour neutralisers that eliminate bad smells and leave your urinals smelling fresh. Effective and hardworking, the blocks also get rid of tough stains and work to control and prevent limescale, leaving behind a fresh citrus fragrance. Channel blocks for frequently used washrooms High impact long lasting fragrance Helps control limescale Leaves a citrus fresh fragrance Great on even tough stains Very effective and hardworking 3kg tub 150 channel blocks per tub