Earth Science Fast Acting Lime 2.5 Lbs., Covers 500 Sq. Ft. Pelletized Fast Acting Lawn & Garden Lime. Made from Calcitic Limestone that is ground to a fine powder and then Pelletized For Clean & Easy Application. It Is Combined With Nutri-Bond Technology Which Holds Nutrients In Place For Maximum Effectiveness & Reduction Of Nutrient Run Off. It Works Faster Than Typical Lawn & Garden Lime. It Raises Ph In Acidic Soils, Putting Dormant Fertilizer & Nutrients To Work In The Lawn by making them more available to plants. It Can Be Used In Any Spreader. 1 bag of Earth Science Fast Acting Lime equals 4 bags of regular ag Lime.