Envirofill is composed of naturally occurring sand found only in the Hickory Formation of central Texas. Its highly-rounded quartz core resists compression so it doesn’t continue to compact over the life of your lawn, promoting better drainage. Microban significantly reduces pet urine odors by up to 99%. Microban has been scientifically proven to disrupt the bacteria process that coverts pet urine into ammonia odor. So be assured, Fido can go about his business worry-free. Microban antimicrobial protection is infused into Envirofill during the manufacturing process to help prevent the growth of bacteria, mold, and mildew that can cause stains, odors, and product deterioration. Because of its superior durability, Envirofill’s coating and color are warrantied for 16 years. When your turf wears out and needs replacement, Envirofill has the potential to be reused in your new turf.