Bloo Power active rim block is an innovation which combines design and function in one. Cleaning Foam – cleans the toilet with every flush. Anti-Limescale – formulation helps prevent limescale forming. Dirt Protection – helps prevent new dirt from sticking. Extra Freshness – provides a long-lasting fresh scent. Bloo Power Active with +50% Anti-Limescale Effect not only provides a long-lasting scent, but also a boosted formula against limescale for a cleaner and shinier toilet. Bloo Power Active thoroughly cleans the bowl with every flush, with cleaning foam for extra freshness.