SPRAY AND FORGET SUPER CONCENTRATED ROOF CLEANER *Gallon *A "No-Rinse" concentrated cleaner that removes and prevents green and black mold, mildew, algae and moss stains on asphalt, shingle, tile, metal and cedar shake roofs *Contains no harmful bleach, lye, acid or phosphates *Cleans up to 700 sq. ft. *Eco-friendly, biodegradable and non-corrosive *Bottle