New Harpic Essential is a toilet bowl cleaner with a Biodegradable* formula. Formulated with Citric Acid and White Vinegar, the formula removes limescale, gets rid of tough stains, leaves behind a clean scent, and is EU Ecolabel certified. *Over/More than 99% Biodegradable and Mineral Formula. See Our Harpic Expertise Inside Free From Bleach Cleaning Hero Citric acid gets rid of stains and dirt Helper White vinegar is known to help remove limescale Freshness Booster Eucalyptus fragrance.