The synthetic grass fiber is polyethylene (PE). PE is the most common plastic on the planet earth. Every person comes into contact with and utilizes PE every single day of their lives. It is used for milk cartons, soft drink bottles, grocery bags, children’s toys, and so many other products as would exceed the imagination. PE is simply composed of common carbon and hydrogen. There are no known human or animal risks by contact, proximity or ingestion. The Backing into which the synthetic grass is woven is polypropylene (PP). This product is almost identical to PE except that it contains, in addition to hydrogen and carbon, a methyl group component. This component renders PP stiffer in certain respects and more durable under extreme temperatures than is PE. The PP product is regularly encountered in every day life. It is used for microwave dishes, frozen food containers, auto parts, outdoor furniture and many other common items. There are no known human or animal risks by contact, proximity or ingestion. Upon the Backing is imposed a sealant urethane Coating which holds the Fibers in place. Urethane is a related polymer product similar to PP and PE but it adds a nitrogen component. The result produces a flexible rubber-like plastic more common in every day life than either PP or PE. Urethane, in its various forms, is found in clothing, furniture, carpets, appliances and hundreds more various items and uses. Urethane presents no risks of any kind to any living thing. The rubber used for the “In-Fill Process” is cryogenically produced recycled rubber whose raw material is used tires, old tennis shoes and other discarded rubber products. The finished product is a fractured, ground, washed, dried, and sterile product which is free of impurities. It is of a particle size similar to a medium grade of sand. There is no hazardous or harmful aspects associated with this product. The sand used for the “In-Fill Process” is common, tan colored, children’s play sand. It contains no silica, it is free of asbestos and it contains no impurities of any kind. The play sand is dry and completely sterile at the time of installation. The play sand is as safe as any manufactured product known and is clearly preferable to natural soils.