Bentonite Clay 50lb. bag | Farmers Association
Calcium Bentonite: Calcium bentonite is a nonswelling bentonite. It will not swell without additives or chemicals. Calcium bentonite enhanced with additives will quickly lose its swellIt is short lived. It is the swelling ability of the sodium bentonite that enables this clay to bond with the soil to create an impenetrable liner in the soil.