Support the digestive health of your livestock with this diatomaceous earth feed supplement. For use as an inert carrier or anti-caking agent in animal feeds, this 100% diatomaceous earth is all natural and contains no additives. It has a large surface area and high pore volume that allows it to absorb moisture and extend the life of your feed. The freshwater diatoms are high in Si02 with less than 0.1% crystalline silica. This convenient 12lb bag of white diatomaceous earth never expires.