Diatomaceous Earth is also known as DE or Diatom Shell Flour.
DE is a mineralized compound made from the fossilized remains of tiny, aquatic organisms called diatoms.
Their skeletons are made of a natural substance called silica. Over a long period of time, diatoms accumulated in the sediment of rivers, streams, lakes, and oceans. These deposits are a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder and used by natural and organic growers as an animal feed supplement and for insect and parasite control.
DE is a natural occuring mineral and is widely used by gardeners and farmers in natural and organic systems as a feed supplement, for dusting animals and for dusting vegetation.