ONECHEM 3 X 5 LITRE CONCENTRATE SPRAY AND LEAVE - PATIO DECKING FENCING - GREEN MOULD AND ALGAE KILLER - MAKES UP TO 25 LITRES * CLEANS WITH NO EFFORT: One Chem Spray And Leave Kills All Green Mould, Algae & Lichen without The Need For Scrubbing Or Pressure Washing Simply Mix, Spray & Walk Away. * SUPER CONCENTRATE: One 5 Litre Bottle Of One Chem Spray & Leave Makes A Minimum Of 25 Litres Of Ready to Use Solution * PREVENTS REGROWTH: Once Treated Results Will Show In 2-3 Days. Spray & Leave Penetrates Your Outdoor Surfaces Creating An Invisible Barrier Which Will Help To Prevent Re-Growth For Up To Six Months * ALL HARD SURFACES: Perfect For Use On Patios, Decking, Fencing, Paths, Driveways, Roofs, Sheds, Greenhouses, Garden Statues, Terracotta Pots, UPVC Windows, Boats, Caravans, Motor Homes And All Indoor & Outdoor Hard Surfaces Affected By Green Mould and Algae. * SAFE TO USE: Biodegradable Non-Caustic, No Acid & No Bleach One Chem Spray & Leave Is Safe around Children & Pets Once The Area Is Dry. OneChem 5L Spray and Leave Concentrate Algae, Lichen and Mould Remover - Remover This product is designed to clean Lichen, algae and everyday dirt away from the affected areas and to destroy the spores which are produced by the mould and algae. This will help lengthen the time in which Lichen and algae reforms. % litres makes up to 25 Litres of ready to use product. NOTE: The colour of the bottle may vary