Use Garden Safe Brand Diatomaceous Earth Crawling Insect Killer for organic gardening. The formula kills listed insects by contact, including German cockroaches, ants,* beetles,** fleas, mealybugs and other listed crawling insects. Use outdoors on plants and on the soil around plants to kill listed crawling insects by contact. When dusted on insects, the fine/powdery granules coat their exoskeletons and absorb oils and fats, causing them to dry out and die. The granules also cut into insects’ outer skeletons, causing them to dehydrate further. Always read the entire label and follow all directions and precautions. *Except carpenter, harvester and pharaoh ants **Except wood-destroying beetles.