Naturepedic uses only hydrated silica which is "Generally Recognized As Safe" for use in food products
(a U.S. Food and Drug Administration Classification) . Silica is a natural mineral that can be found in sand, rocks, etc. It is a major
constituent of human tissue, cartilage, bones, teeth, etc., and is even available at health food stores as a food supplement. It is also a primary
ingredient in natural toothpaste and hundreds of food and other consumer products.
Unlike fire protection systems based on controversial fire retardant chemicals, the Naturepedic system is based on food-grade ingredients
that are essential to human health.
Please visit http://en.wikipedia.org/wiki/Hydrated_silica for more information.