Much smaller, and have been tumbled longer than the regular wood chips, making them smoother and less sharp than the regular wood chips. These are used for children’s playgrounds. The Consumer Product Safety Commission recommends play areas to be at least 12 inches deep.
Hemlock is also premium mulch, and has some of the insect-repelling qualities that the cedars do. It is reddish in color and also aromatic. It lasts longer than the other bark mulches.
Western Red Cedar is a premium mulch, and comes from sawmills in British Columbia. It also helps repel insects, and lasts longer than the white cedar. It is reddish in color and highly aromatic.