Crikey Mikey Attack is a potent outdoor solution designed to swiftly eliminate algae, lichen, and mould from various outdoor surfaces such as block paving, fences, walls, patios, and roofs. This industrial-strength formula delivers fast results, visible within 12 hours, and can be used either neat for tough stains or diluted for routine maintenance. With its effectiveness endorsed by satisfied customers, Crikey Mikey Attack is a reliable choice for rejuvenating outdoor spaces. However, it's important to note that this product is not suitable for certain surfaces like lawns and should be kept away from people and pets until dry.