Crikey Mikey Assault is a potent solution designed to eliminate algae, lichen, and mould from outdoor surfaces rapidly. It guarantees visible results within 12 hours of application. However, it's essential to note that this product should not be used on lawns, flowerbeds, vegetable plots, trees, shrubs, Tarmac, or lead surfaces. Additionally, people and pets should be kept away from treated areas for 24 hours or until dry.