Earth Science Fast Acting Gypsum starts working immediately to loosen clay and other compact soils, creating a better environment for plants to thrive. The result is improved water penetration, more workable soil and better root development. Earth Science's patented Nutri-Bond Technology bonds with the soil to help keep more product where you put it. That's better for the environment and helps your lawn or garden get the most out of every application. As a result of Nutri-Bond, 1-bag of Earth Science Fast Acting Gypsum does the work of up to 4-bags of regular gypsum.