There’s never been a quicker, easier way to bring stonework, masonry, concrete and tiled roofs back to their former glory! Just do what it says on the bottle, ‘spray and leave’. No tiresome scrubbing, wiping or washing off required. Within days, this safe, strong and powerful cleaner gets to work, targeting green algae, moss and lichen, even algae spores; stopping re-growth for months and leaving your home and garden looking pristine. 5L with trigger spray. Covers 62.5sqm.