For more information on the natural zeolites used in Pure Body and Pure Body Extra Strength zeolites, please listen to this interview. There is a common misconception with competitors that natural earth-mined zeolites are naturally "contaminated" with toxins from the earth and that depends on the zeolite and the region of extraction. Touchstone Essentials CEO Eddie Stone explains this in detail in the video above. Earth-mined zeolites used by Touchstone are also not cleansed with a harmful chemical solution. Touchstone Essentials cleans their zeolites with a food-grade vinegar because the zeolites mined are already clean from nature upon extraction. The proprietary process involves no dangerous methods that inflict harm on the person consuming them. Please listen to this interview if you are curious about common misconceptions and frequently asked questions.