Out of 600 deposits in the US only 4 are considered “Food Grade” by the FDA standards. Depending upon how the deposits were formed, clay particles may be present in sufficient quantities to clog the pores of the fossilized shells. If this is the case, the effectiveness of the Diatomaceous Earth is severely reduced. We have analysis of many other “Food Grade” deposits and are satisfied that we still obtain the Diatomaceous Earth for our products from the purest fresh water source.
Diatomaceous Earth is not an earth. It is the fossilized remains of microscopic shells created by one celled plants called DIATOMS. Not all deposits of Diatomaceous Earth diatoms present in those deposits are the same.