Permaguard Fresh Water Food Grade Diatomaceous Earth, 50-Pound

Permaguard Fresh Water Food Grade Diatomaceous Earth is a 50-pound bag of organic anti-caking agent and pesticide. Made from fossilized remains of aquatic organisms called diatoms, this product contains an all-natural silica substance. It reacts with oxygen and water to create silicon dioxide, which is the ingredient needed to kill insects. This food-grade Diatomaceous Earth can also be used as an anti-caking agent. However, caution should be taken as it may irritate the nasal passages and eyes.