GREEN TO CLEAN is a concentrated microbiological biocide specially formulated to kill and remove all types of green organic growth on external hard surfaces. Just spray and leave it to take effect. GREEN TO CLEAN is easy to apply and suitable for use by the DIY market or professional contractors. After application, the powerful formulation will quickly start to kill and remove organic growth, algae, mould and mildew as well as the various types of lichen that are frequently found on driveways, patios, roofs, walls and paths.