Crikey Mikey Extra Strong is a potent solution formulated to swiftly eradicate algae, lichen, and mould from various outdoor surfaces, revitalizing outdoor spaces effectively. It is designed for use on surfaces such as block paving, fences, walls, brickwork, stonework, paths, patios, decking, gravelled areas, and roofs. Its powerful action yields visible results in just 12 hours, ensuring efficient removal without the need for multiple applications. This industrial-strength product can be used neat for tackling stubborn areas or diluted for routine maintenance, providing versatility in application. Packaged with 2 x 5 liters of Crikey Mikey Extra Strong and full instructions, it offers a comprehensive solution for outdoor cleaning needs.