Neutralizes effloresence and safely cleans brick and concrete. Removes cement, mortar, rust and slurry stains. Effective on moss, algae and soot stain. Does not contain harmful mineral acid. The only sprayable brick cleaner on the market and covers up to 9 square metres per litre. Restores the natural colour of the surface being treated and will not remove the colour from concrete blocks. Customers buying in box quantities are invited to ring 01621 827312.