Spruce up your outdoor space economically, safely, quickly and with almost no effort! Dilute this concentrated formula in the pressure sprayer and mist over dirty or discoloured areas (or dilute in a bucket and apply with a soft brush). Unlike most chemical cleaners, the organic ingredients are harmless to pets, wildlife and ponds. Yet, its just as fast and effective, with visible results in 24 hours! One 5L bottle treats up to 160 square metres, removing lichen and algae, and destroying their spores! Surfaces continue clearing for months afterwards. 5L concentrated formula.