PREMIUM PRO TURF Green Sand INFILL- 50 Pound Bag Infill is used between artificial grass blades to help the grass stand up Earth friendly infill that is safe around children and pets. Non-toxic and completely reusable It has Microban so it's anti microbial The microban anti microbial product protection works continuously to help prevent the growth of bacteria, mold, and mildew Infill protects the grass backing from ultraviolent rays, which prolongs its lifespan