NuPlay® GN15BK25 1.25" Black Rubber Nugget Mulch 25 CuFt. Our brands of nugget rubber mulch are the perfect loose-fill nugget groundcovers for playgrounds and commercial landscaping. Simply put, no matter which brand you choose, you will have the safest playground surface on the market today with fall height ratings of up to 14 feet. With a 12-year color guarantee your children will stay safe, and your yard will look great for years to come.