Keep your toilet impeccably clean with Harpic Power Plus Active Toilet Cleaner Tablets. These effective tablets begin working immediately to clean under the waterline without the need for scrubbing. Designed to eliminate 100% of limescale, they also work efficiently in the U-bend. For regular cleaning, use one tablet per week; for heavy limescale build-up, use two tablets and leave overnight. Suitable for septic tanks, these tablets make toilet maintenance simple and effective. Harpic Power Plus Active Tablets are specially formulated to give your loo a deep cleaning action without the need for scrubbing; great for cleaning of the u-bend - where your brush can't reach.