Make your loo the best seat in the house with a boost of lavender scent flush after flush. Bloo Colour Active Lavender Toilet Rim Block is an innovative rim block which combines design and function in one. A hygienically clean and fresh toilet with every flush! Combining power balls and purple water technology, it actively cleaning between flushes. Safe for use in septic tanks With its unique Bloo 4 functions formula, Bloo Colour Active prevents limescale, provides cleaning foam, dirt protection and extra freshness for your toilet. 100% anti-limescale to keep the loo hygienically clean in between deep cleans and a strong foaming action preventing dirt and grime Simply place the product on the rim of your toilet, adjust it to the water flow and experience boosted freshness and cleanliness with every flush! *Patent number EP2430136B1.