DE or "dirt", as referred to by many, has been used by people for many years for colon refining, detoxifying, anti-parasitic and as a safe, organic, natural insecticide. For about 4,000 years, the Chinese and Egyptians have dusted DE in their grains to protect them from being spoiled by moisture, mold and pests. These processes keep them dry and repel or kill unwanted pests.
So what exactly is DE? Diatomaceous Earth is a white chalky rock residue built up over eons and eons by fossilized wasted remains of diatoms. You can visit here http://diatomaceousearthpowder.net/ to know more about Diatomaceous Earth Nutritional & Everyday Use Facts.
These fossilized rock formation are called diatomite. Diatoms are one of the most frequent types of phytoplankton, singled-celled algae. The diatoms' cells are encased within a unique cell wall made of silica, in the form of silicon dioxide. These rock sediments are crushed and milled into flour like consistency and hence it is also called Fossil Shell Flour.
Silica is a major mineral vital to all life forms – animals, plants and humans. Dr. Adolf Butenandt, 1939 Nobel Price winner, proved that "life cannot exist without silica". Dr. Barbara Hendel states that "Silica is the most important trace element in human health". Perma-Guard's Fresh Water Food Grade Diatomaceous Earth contains 89 – 95% amorphous silica and 14+ essential trace minerals.
It is significant to know that amorphous silica is different from crystalline silica. Food Grade Diatomaceous Earth amorphous silica is silicon dioxide in it's natural occurring state.