5L Benz Lightening CleanzeLIGHTNING CLEANZE 10 11% SH softwash biocide: Rapidly removes the biofilm from roofs, render, walls, patios & paths. UNIQUE SODIUM HYPOCHLORITE (SH) SOFTWASH BIOCIDE BIODEGRADABLE SURFACTANT DOES NOT BIO ACCUMULATE Lightning Cleanze is a fast acting SH softwash biocide that rapidly removes black, red, green and yellow staining e. g. caused by algae, lichen, fungi & mould from render, roofs, paths, patios, upvc, cladding