Harpic Hygienic toilet rim block targets the toilet bowl for stains and deposits, and keeps it visibly clean and fresh for longer. It fits discreetly under the rim. A single block of Harpic Hygienic toilet cleaner lasts up to 3 weeks depending upon your usage. It can help prevent limescale build-up, keeping your toilet clean for longer. Harpic Active Fresh ensures efficient cleaning of your toilet. The unique fragrance is designed for ultimate freshness, leaving your toilet fresh for hours.