Article: Diatomaceous earth is unique stuff.

What is diatomaceous earth? -- Amy, WA

Diatomaceous earth (DE) is a fine powder made from ancient, fossilized, microscopic seashells formed by single-celled algae (called diatoms). Each tiny particle has very sharp edges. These can pierce the bodies of such parasites as fleas and lice, and many other insect pests, causing them to dry out and die. It's often used to control flies, by adding it to livestock feeds or ...

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