Stone King Patio Restorer and Cleaner Removes Black Spots Algae - Restore Natural Colour Lichen, Green White Fungi Biodegradable Acid-free 4 L

CLEANS AND RESTORES YOUR PATIO: Stone King is a ready to use patio cleaner that breaks down dirt, grime, black lichen, white fungi and green algae on paving slabs. It brings back the natural colour of your patio, paths and courtyard and leaves the surface less slippery underfoot FOR NATURAL STONE AND CONCRETE: This powerful stone cleaner works on sandstone, Indian sandstone, limestone, Yorkstone and all types of concrete and pre-cast paving slabs. Use it as a patio slab cleaner, a concrete cleaner or a driveway cleaner on paths, courtyards and any paved area ALGAE AND LICHEN REMOVER: As an algae remover and lichen remover in one, it works beneath the surface to loosen staining before you rinse, so pressure washing is faster and more effective. Any stubborn black spots that remain can be re-treated until they are gone GARDEN AND PET FRIENDLY: The biodegradable, acid-free formula is safe around plants when applied correctly, and the runoff won't harm your lawn or flower beds. Keep pets away while it works. Once it has been rinsed off, pets can walk on the area again, which makes this a pet friendly patio cleaner for family gardens EASY TO USE, NO MIXING: Pour it neat into a pump-up garden sprayer (not included) and spray it onto dry stone. A colour change within 15 minutes shows you have applied enough. Leave it for 2 hours, then pressure wash it off. One 4 litre bottle treats up to 20m². Treat one slab first, as older stone may need more than one application for the best results