Eco Pro Siding and Deck Wash will not harm house wrap repellency. Loosens dirt, algae, mold & mildew, bird droppings, and bug residue. Non-streaking and excellent rinsing properties. Delivers low Dynamic Surface Tension (DST) critical to optimum cleaning. Superior penetration where agitation is restricted. Phosphate free / VOC free. Safe on plants. Effective at 20:1 dilution.