New and improved formula.|Self-cleaning action – No jet washing, no scraping, no scrubbing required.|Product can also be applied using a pressure sprayer, meaning it can also now be used on vertical surfaces e.g. walls and roofs|Easier to dissolve.|Deters algae moss and weeds for up to 6 months, removes patio blackspot.|One product can be used on all previous product surfaces e.g. block paving, gravel, artificial grass, patios, paving slabs, tarmac, decking, resin drives etc.|Contains no bleach, no acids, no biocides and is biodegradable.|Quick and easy to apply, no measuring.