General description Ronseal Thompson's Advanced Patio & Block Paving Cleaner is a powerful solution designed to effectively kill moss, mould, and algae on various garden surfaces. Its advanced formula not only removes dirt and grime but also revives and brightens the surface, leaving it looking like new. With enhanced Moss Guard Technology, this cleaner provides a protective barrier that prevents regrowth for up to 6 months, making it an ideal maintenance product for patios and block paving. Technical specifications Size: 5 litres Coverage: 15-20 m² per 5 litres Type: Sealer MPN: RSLTPBPCP5L EAN: 5010214867844 Installation Prepare the surface by scrubbing it with a stiff bristle brush. Pour the cleaner onto the surface and scrub thoroughly with a stiff bristle brush. Allow the cleaner to work for 15 minutes. Scrub the area again for effective cleaning. Hose down and wash off the suds. Leave the surface to dry. Usage To maintain your patio, repeat the cleaning process every 6 months to