DECK CLEANER & WOOD CLEANER THAT ALSO ACTS AS A COMPOSITE DECKING CLEANER A high performance deck cleaner and wood cleaner that will quickly remove lichen, algae, moss and dirt from decking and other external wooden surfaces. There is no need for pressure washing, which can 'stripe' the wood, leaving permanent marks. Deck Cleaner is also a powerful moss remover, composite decking cleaner and algae remover for decking and garden furniture. Deck Cleaner contains a potent biocide and other active elements that will quickly kill off algae, lichen and other organic matter. Deck Cleaner will quickly remove moss & algae fast decked areas on gardens & patios. Most ingrained dirt and grime will be removed after one application, although a second application may be necessary to get a 'good as new' look.