Prolong the life of your roof, deck, patio and walkways by using Lilly Miller Moss Out! for Roofs and Structures. Prevents expensive roof damage and its non-staining, non-corrosive to galvanized gutters. Under its fuzzy green exterior, moss is a destructive pest. It creeps across roofs, loosening and staining shingles. It covers walks and decks, making them slick and dangerous to walk on. Fight back by using Lilly Miller Moss Out For Roofs and Structures. 6 lb. covers up to 6,000 sq. ft. Exclusive micro-granule formula that kills moss quickly Covers up to 6,000 sq. ft. Use on roofs, patios, sidewalks, brick, and unpainted cement Use dry or wet Non-staining, Non-corrosive to galvanized gutters