Diatomaceous earth is the fossilized remains of a hard shelled algae-like plant. Some brands of diatomaceous earth are approved by the USDA National Organic Program as compliant for organic gardening and certified organic.
Diatomaceous earth comes out of the container like a fine powder and feels a lot like talcum powder. For insects though, it has microscopic edges that act like razor blades. When insects crawl through the powder, it is drawn into their joints and cuts through their exoskeleton causing them to dehydrate and die. Some manufacturers add a bait formula to their diatomaceous earth, so that when ingested will also kill them from the inside.
Not only are chemical insecticides dangerous to use around the home and office, over time some insects will develop a resistance to them. Because diatomaceous earth works by cutting through the insect's exoskeleton and digestive system, they can't build immunity.
Diatomaceous earth is applied by spreading the powder in cracks, baseboard, under cabinets and appliances. The power is safe for humans and pets. The company does suggest wearing a dust mask during application. As long as the product stays dry, it is working. There is no expiration.
Diatomaceous earth is effective on bed bugs, ants, earwigs, cockroaches, silverfish, crickets, fleas, millipedes, centipedes and most crawling insects.
If you want a safe, effective, long lasting insect killer, pick up diatomaceous earth.
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