I bought about a dozen bags of Ozark Oak last winter. Then I bought a bunch of Royal Oak. Been using the R O for past couple of months. Just found the last bag of Ozark and started using it a couple days ago. The difference between them is pretty amazing. The RO took about 20 minutes or longer to eliminate the bad smell (VOCs). The Ozark is ready in 10. Plus the pieces are fist sixe and very little dust. Also so far no strange looking pieces that look like lumber yard or flooring waste.