Rainbow Mulch is a 100% naturally-derived mulch. The primary ingredients are raw rubber and earth. Our proprietary mixture also contains zinc, baking soda, sulfur and stearic acid.
More importantly, Rainbow Mulch is not made of used tires, which is sadly a very popular option for other brands of rubber mulch. Rubber mulch that has been recycled from used tires contains many additional chemicals or additives that were used to create the tire, including wire or steel, polyester, nylon or rayon.
We want you to feel 100% confident in the products you install in a playground, in your own backyard or underneath your kids' swingset. That's why you can trust that Rainbow Mulch is 100% tire-free and non-toxic.