Harpic Flushmatic in-Cistern Toilet Cleaner is a drop-in tank tablet which can be used for any accessible cistern. It keeps toilet hygiene and continuous clean without any mess. Harpic Flushmatic toilet cleaner works from inside the cistern to release a dose of powerful Harpic formulae with every flush. Distributing the liquid across the bowl, it helps you maintain a hygienic and fresh toilet and prevents the build-up of stains giving you a continuous clean toilet. It is touch free and hygienic and dissolves completely when finished. A single block lasts up to a month depending upon individual usage. Usage Information: Remove block from plastic packet, but do not remove the cloth as it dissolves. Drop the block into the flush cistern on opposite side of water inlet. Wait 10mins before the first flush and get a clean toilet with every flush afterwards. Replace block when blue color disappears. Safety Measure: This product is not edible. Consult a doctor immediately if consumed. Read label for detail. About the Manufacturer: Harpic is a registered Trademark of Reckitt PLC headquartered in England. The first Harpic product was manufactured during 1920s in England. Harpic is the number 1 selling toilet cleaner in the world. Harpic products are made in Bangladesh by Reckitt (Bangladesh) PLC.