Simple Green House and Siding Cleaner is specially formulated to remove environmental pollution, dirt, and grime from vinyl and aluminum siding, stucco, terra cotta roof tiles, and painted wood. It is also a perfect choice for use on shake, shingle, or panel siding. This powerful formula was developed to be used with pressure washing systems, can also be used for manually as a high performance house, siding, and roof cleaner. Cleans and brightens the entire exterior of your home or business.