probiotic based washroom cleaner contains a unique formulation of UK cultivated enzymes that work to break down organic soiling in the washroom environment. odour issues will be eradicated at source, and it even works to eradicate blockages in pipes and drains. it reduces, or even removes, the need for the flushing of urinals. It is safe to use with waterless urinals, compatible with septic tanks and is formulated to work with Jantex Green Urinal Blocks FS402 Pack Quantity: 1 x 5Ltr