HG Algae & Mould Remover, Outdoor Path & Patio Cleaner, Green Algae Remover & Headstone Cleaner, Gentle on Stone Surfaces, Biocide Paving Slab Cleaner - 1 Litre HG Algae and Mould Remover liquid: This powerful biocide surface cleaner helps to kill and remove fungus, mould, lichen, mildew and algae from external surfaces, stone pathways and patios Effective outdoor cleaner: Removes mould and algae from a wide range of surfaces, including masonry, tiles, roofs, walls, patios, paths, fences, boats, caravans and other exteriors Slows down regrowth: The mould and mildew remover is ultra effective as a roof tile cleaner, gravestone cleaner or headstone cleaner, reducing regrowth to keep surfaces looking their best Treats up to 200m2: Once diluted, the algae killer and stone surface protector isnt harmful to your grass or plants. Easy to use algae cleaner, offering rapid results in just 36 hours Includes: 1 x HG Algae and Mould Remover, 1L. Discover the full range of HG cleaning produc