Harpic Flushmatic is an in-cistern toilet cleaner that provides continuous cleaning with every flush. It comes in a value pack of 3 blocks, each 50g, ensuring long-lasting freshness and hygiene. Key Features Continuous cleaning Fresh original fragrance In-cistern toilet cleaner Value pack of 3 blocks Anionic Surfactants, Perfume, Colorant. Solid Block (Para-dichlorobenzene free).Harpic Flushmatic is a line of in-cistern blocks that color the water and release cleaning agents with every flush.Drop the block unit into the cistern tank, away from the water inlet and outlet. Flush to activate the color and foam.Caution: Causes serious eye irritation. Keep out of reach of children. Do not ingest.