Protect your patios with this One-Litre Green Clear by SmartSeal. This Green Clear is a potent, highly effective microbiological biocide that, once applied, will quickly start to rid the area of most types of green organic growth on external hard surfaces. This easy-to-apply formulation is suitable for controlling and removing organic growth, algae, mould, and the various types of lichen often found on driveways, patios, roofs, walls and paths. You can also reapply it at any time to help prevent the reappearance of these various species of organic growth and keep external hard surfaces looking clean. With 1L of SmartSeal Green Clear, you'll get an impressive 30m2. Depending on the thickness of the organic growth, an extra application may be required. It can be used as a watering can or pump sprayer for a hassle-free application. After cleaning the surface, spray this product (when dry) to inhibit further growth and ensure long-lasting results.