Bentonite clay is a substance that absorbs moisture and comes from the drying of calcium bentonite. It is a reaction that occurs naturally and is not hazardous. Desiccant clay is chemically inert, non-corrosive, and most importantly, has an attraction to H2O. This makes it the perfect resource to redirect the flow of water particles away from a packaged item and towards the moisture-absorbing desiccant bags