Envirofill is a premium infill made of naturally occurring rounded silica sand, coated with an acrylic polymer and infused with Microban® antimicrobial technology. This advanced formulation helps prevent the growth of bacteria, mold, and mildew that can cause stains, odors, and product deterioration. Its highly-rounded quartz core resists compaction, promoting better drainage and maintaining turf performance. Like all the other components of superior quality artificial turf, it is safe for dogs and the rest of your family, too.