Indian Sandstone Patio Cleaner Stone King, removes stubborn black stains and colour restorer. Green organic & spots 4L

REVIVES FADED SANDSTONE: Stone King is a deep cleaning Indian sandstone cleaner that cuts through dirt, grime, black lichen, green and red algae. It lifts dark marks and white staining to bring back the warm, natural tones of your patio, paths and steps SAFER UNDERFOOT: By removing the slippery green build-up that forms on damp stone, this sandstone cleaner helps make your patio and pathways safer to walk on all year round. It also works as a lichen remover, clearing the organic growth that standard cleaners struggle to shift FOR ALL NATURAL STONE: As well as Indian sandstone, this natural stone cleaner works on York stone, limestone, marble and travertine. Use it as a patio stone cleaner, a paving slab cleaner or a flag cleaner on paths, steps and outdoor hard surfaces GARDEN AND PET FRIENDLY: The formula is safe around plants when applied correctly, and the runoff from rinsing won't harm your lawn or flower beds. Keep pets away while it works. Once it has been washed off, pets can walk on the area again, which makes this a pet safe 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