Maintain a hygienic toilet effortlessly with Harpic Original PowerPlus Toilet Block Cleaner. This rim blocks not only foams, removes dirt and freshens your toilet bowl for up to five weeks, but also contains a boosted anti-limescale formula. Its 10 powerful actions help to keep your toilet looking and smelling its best while keeping limescale away with every flush. Size: 35g. Directions for use: Remove the block by cutting the pack open along the dotted line. Hook the block to the rim of the bowl, where the water flow is strongest. Once empty, simply dispose of the unit in the bin and replace it.