Funny that is says 100% dustless, because back in the day before I went to paper substate, I think I looked at almost everything out there, and the thing for me that elimintated both corn cob and walnut shell right off the bat, was the dust.

I'm not sure what the manufacturer defines as dust, but when I poured some into a container, a lot of very, very small particles went flying every where. I decided against it as soon as I saw that.