Crikey Mikey Professional offers a potent solution for swiftly eliminating algae, lichen, and mould from various outdoor surfaces, including block paving, fences, walls, and patios. With visible results in just 12 hours, this industrial-strength formula outperforms other products even when diluted, making outdoor maintenance efficient and effective. Neat application tackles stubborn areas, while dilution allows for routine maintenance. Packaged with comprehensive instructions and four 5-liter containers, Crikey Mikey Professional ensures a thorough treatment for outdoor spaces.