Rainbow Mulch is truly non-toxic; we know this we because we make the rubber ourselves. It is never recycled rubber or exposed to roadway containments or wires. Rainbow Mulch is 100% naturally-derived ingredients: raw rubber, earth, zinc, baking soda, sulfur and fatty acid.
Rainbow Mulch is not dyed or painted. The color is baked into the product with food grade colorant that is FDA compliant.
Additionally, Rainbow Mulch has been tested for fall protection and meets ASTM standards F1148, F1487, F1292 and F1918.