I had turf installed in my backyard from a Global Syn Turf dealer in Idaho.  I was particularity looking for an artificial turf infill that was safe for my dogs and children.  Global Syn Turf has so many different types of infills for the artificial turf and most of them are Anti Microbial.  This is important if you are going to have pets and want to protect the safety of your children.   Global Syn Turf has brown silica, green silica, WonderFill, ZeoFill, and T-Cool infills.  I ended us using the WonderFill which is an Anti Microbial acrylic coated silica sand.  This infill was a clear choice for me.  I advise everyone to research the infill you put in your artificial turf and choose what is best for you.  Hats off to Global Syn Turf and an A+ rating.