Keep your toilet sparkling clean and fresh with Max Flush 5 Ocean Spray Toilet Rim Block Cleaner (Twin Pack)! This long-lasting twin pack provides effective cleaning and a pleasant ocean breeze scent for up to 4 weeks per block. Max Flush 5 removes dirt and grime, prevents limescale buildup, and leaves your toilet hygienically clean with every flush. Safe for septic tanks and easy to use, simply place the block in the water flow and enjoy a clean and fresh toilet for weeks.