Restore the charm of your outdoor space with the StoneCare4U Essential Block Paving Cleaner. This is a high-performance cleaner for cleaning all types of external block paving. Apply and leave for 2 hours, and it will easily remove dirt and grime without the need for scrubbing. Suitable for all outdoor stone and masonry surfaces, including pavers, pathways, driveways, block paving, patios, and natural and engineered stone. It also works on algae, lichen and black spots, removing recent and aged dirt and grime. The acid-free, alkaline-based solution won’t damage or etch the surface like acid cleaners. How To Apply: Before use, remove any loose debris from the block paving, and ensure you have adequate safety wear, i.e. gloves, suitable protective eyewear, face mask and clothing. The cleaner is to be used neat or diluted 1:1 with clean water – always perform a small test area to determine a suitable dilution rate and dwell time. Carefully transfer the cleaning fluid from the bottle to a pump sprayer or watering can. If these containers are not available, then cleaning fluid can be used directly from the bucket. The cleaner needs to be left on the surface for at least an hour. During that time, the surface must not be allowed to dry out. If necessary, mist with additional cleaning fluid or clean water to prevent the paving from drying. Work the area(s) of staining with a brush, if necessary, but ensure the surface remains wet. After at least two hours of dwell time, the treated area should be washed down with clean water first to neutralise the cleaner before, then power washing off for perfect results. Please note the cleaning fluid can harm or kill vegetation, so try to avoid washing off garden or lawn grass. If this is unavoidable, then rinse with plenty of clean water to dilute the cleaner. In areas of heavy soiling and extremely stubborn black or white lichen spots, it may be necessary to extend the dwell time of the cleaner for up to four hours or overnight, where necessary, before power washing off. To achieve perfect results on aged, stubborn black or white lichen spots, test a small area to ascertain the required dwell time necessary to remove the marks – then follow the instructions above. Two to three applications may be needed. Please Note: The cleaner contains a chlorine-type agent as an active ingredient and will stain fabrics and sensitive materials. Take special care to avoid contact with fabrics and tarmac during application. The fluid might cause slight lightening of some surfaces – always try the product in an inconspicuous area before use. Coverage: Up to 50m² per 5L when diluted 1:1. Coverage will vary depending on surface contamination. Quantity: 25L.