Leak-resistant and moisture-resistant poly 25 lb. bag Floor-Dry. A medium-coarse granular absorbent made from diatomaceous earth (DE), a natural mineral that is 40-45% less dense than clay. Absorbs liquid internally, allowing quick cleanup of all non-aggressive fluid. Coarse granules offer less breakdown and better traction in areas where spills have been absorbed. 100% natural mineral and NSF registered.