Design - Bloo’s pioneering ball design and patented* technology ensure that the toilet bowl is sparkling clean after every flush. Long lasting - Each rim block lasts up to 240 flushes and contain a premium fragrance blend for an everlasting enjoyable toilet moment. Fragrance - Every ball is loaded with a perfumed core that has 40% more fragrance freshness Vs the outer shell. Clean - A strong foaming action to prevent dirt and 100% anti-limescale to keep the loo hygienically clean in between deep cleans. Bloo - A hygienically clean and fresh toilet with a boost of fragrance with every flush!.