Revive Organic Soil Treatment Granule Mineral Supplement 5-1-1 Plus Iron fertilizer 25 lb. is formulated to help homeowners grow a thick green and beautiful lawn. It allows nutrients and air to penetrate deep into soil and works to improve nutrient percolation. It also prevents and corrects iron deficiencies and enhances your lawn s color. This soil-wetting agent contains surfactants and extracts that are all natural and organic. They are safe for pets kids and all members of the family.