MAG-I-CAL™ is a soluble form of Calcium, readily available for plant uptake or pH adjustment. Easy to spread pellets release trapped nutrients. Can be used throughout the yard. Boosts lawn's color, reduces stress, improves soil texture, aids in water uptake. Save on labor and storage space: fewer refills, less handling and fewer empty bags to dispose of. The missing ingredient in your lawn care program that makes everything else work better! 4.5 lbs.