Patio-Guard™ — Trade Strength Patio Cleaner, Driveway Cleaner & Algae Remover Patio-Guard is a trade-strength patio cleaner and algae remover that eliminates green algae, black spot, mould and lichen from patios, driveways, paths, fences, roofs and UPVC. One 5-litre container treats 100–200 square metres — making it one of the most concentrated patio and driveway cleaners available in the UK. PATIO CLEANER & DRIVEWAY CLEANER IN ONE: Removes green algae, black spot and organic growth from paving slabs, stone, block paving, concrete paths and driveways — and keeps working on fences, decking areas, roofs and UPVC too. SPRAY & LEAVE — NO SCRUBBING: Simply apply to the affected area and walk away. No jet washing, no scrubbing, no hard labour. The formula keeps working for over 12 months, preventing algae regrowth long after application. TRADE STRENGTH CONCENTRATE: More concentrated than standard retail patio cleaner solutions. For general use, dilute 1 litre with 5 litres of water; increase the concentration for heavy algae or black spot infestations. PET & CHILD FRIENDLY: Unlike corrosive bleach-based products, Patio-Guard is formulated to be safe around pets and children — no need to cordon off treated areas after application. LONG-LASTING GREEN ALGAE REMOVER: Continues protecting treated surfaces for 12+ months, keeping patios, drives and paths cleaner for longer and cutting annual maintenance. What surfaces can Patio-Guard be used on? Patios, paving slabs and natural stone Driveways, block paving and concrete paths Fences and garden timber Roofs and gutters UPVC windows, doors and cladding Coverage & dilution Each 5-litre container treats 100–200m². General/light use: mix 1 litre with 5 litres of water. Heavy contamination: increase concentration as required. 5 Litre trade strength concentrate — UK manufactured.