EARTHWORKS HEALTH LLC offers the PUREST Freshwater Food Grade Diatomaceous Earth on the Planet! THERE IS NO CLAY IN OUR PRODUCT. Firstly, this is About Us. Earthworks health is a LLC owned by Larry Smith of Omaha, Nebraska. Larry also owns Custom Feed Services in Norfolk, Nebraska where all orders are packaged and shipped. Custom Feed Services is a family owned and operated business that was started out of our garage in 1968. Through the years, the Lord has greatly blessed, and Custom Feed Services and Earthworks Health continue to grow. We were even honored in 1983 by Inc. magazine as one of the 500 fastest growing companies in America. It has always been our goal to provide a great product at a wholesale price ?