HydroChill® just got even even easier. A new coated sand formulation has not only increased evaporative cooling performance but accelerates installation efficiencies. The patented formula continues to improve comfort levels on turf by driving surfacetemperatures down by as much as fifty degrees. Years of R & D testing both in labs and in the field have yielded a solution that is odorless, nontoxicand now, with Bac-Shield, offers superior, organic, anti-microbial properties. Smart, Easy, Cool.