Wood playground mulch is made of a variety of hardwoods and softwoods. Not only is it certified ASTM and ADA, this material also carries the IPEMA certification.
This makes it one of the safest, highest achieving playground mulches on the market. The alternative to a wood playground mulch would be a rubber mulch.
Rubber mulch is CPSP certified for playgrounds as it provides superior fall protection. It also meets the ASTM standards for playgrounds.
This type of mulch does not have to be replaced often and can last up to 10 years.