Jangro Premium Biological Blocks 3kgThese urinal blocks are fast acting and water soluble, providing effective, continuous cleaning and a long lasting freshness. The pDCB free blocks contain a powerful biological cleaning agent that is proven to keep pipework odour free, while saving on water usage and reducing the need for flushing. Perfect for any type of urinals and troughs, but especially ideal for institutions, schools and public buildings that require the highest standards of