Finely-milled fossilized shells of fresh water diatoms that kill soft-bodied insections such as aphids, cutworms, root maggots, and the like by causing dehydration. Will cause earthworms to vacate the treated area for awhile, and it will kill beneficial nematodes. Can be applied in furrows along with seed, liberally spread around the roots and stems of affected plants, dusted on teh leaves, or mixed with water and sprayed on (1 cup DE to 2 cups of water, keep agitated). Small particles; avoid breathing the dust. 4 pounds.