Sand is naturally smooth and works well as infill for artificial grass. Silica granules that have been shaped into round or smoothly irregular pieces also make good infill. The smoothed surfaces reduce friction between the particles, which keeps the granules from settling and making the ground hard. Sand will pack tighter than the silica granules, but it still produces a soft, cushiony base.
Sand and silica granules used for infill are colored green so they blend in visually with the blades of grass. They are also coated with an acrylic, anti-microbial polymer to help retard growth of bacteria that may be present in debris or pet waste that settles on the grass. For these reasons, schools and playgrounds often choose silica granules for artificial turf infill.
Sand and silica granules cost slightly more than crumb rubber, but they won’t degrade as easily as rubber. They are also less likely to be carried away by clinging to skin, clothing, or fur.
EnviroFill
This is one of the best infills for kids and dogs. Its Microban technology breaks down bacteria associated with pet waste, to prevent odors and stains. It is cold-resistant and doesn’t retain heat, so it feels cool to the touch. It will not become compacted or cling to fabric or fur. And it is guaranteed for the life of your artificial turf.
Shell Tech
This is a 100% natural infill made from walnut hulls that have been ground into smooth granules. Shell Tech is very durable and weather-resistant, and it produces no dust. Because the material is entirely organic, it is also hypoallergenic and there are no harmful chemicals to leach into the soil.
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