Swanson, Diatomaceous Earth, Fossil Shell Powder, 1 lb (454 g)

• 100% Pure Food Grade
• Suitable For a Variety of Uses 
• Non-Toxic Fossil Shell Powder

Diatomaceous earth is one of the most naturally versatile organic materials found in nature. It’s made from a single, non-toxic ingredient-finely ground, fossilized hard-shelled algae, a great add to living a green organic lifestyle.