Product main features 2 x 50 g WC-Tabs every flush creates foam which cleans the toilet fragrance ensures long-lasting freshness protects against re-pollution and maintains long term cleanliness reduces limescale and ensures radiant purity in the toilet true feeling of freshness This product is a hazardous substance. Find more information in the safety data sheet. You can download the safety data at: www.grohe.com/safety-data-sheets/