SAFER 51704 Food Grade Diatomaceous Earth, 4 lb BagModel No: 51704. Our Safer® Brand Food Grade Diatomaceous Earth is a natural anti-caking agent designed to be used as an animal feed additive. The formula aids in better flow and mixability of animal feed without added chemicals. This food grade diatomaceous earth prevents clumping and does not absorb the nutrients of the food. When used as directed, this product causes no harm to animals. Be sure not to exceed more than 2% of your animals’ total diet. This product is food grade and is designed only as an additive for animal feed. Ensure the diatomaceous earth additive does not exceed 2% of the animal's total diet. Avoid contact with eyes as diatomaceous earth can cause moderate eye irritation. Wear a dust mask approved by NIOSH/MSHA when applying. OMRI Listed® and compliant with organic use.