A friend and I were cutting up a sugar maple that fell down a few months ago. We had a big pile of chainsaw shavings...and he kept some for using in a smoker. I was concerned about the bar oil being mixed in with the shavings...but he didn't seem to worry about it. After some reading here...I see you can fill the saw with cooking oil and use that. And I'll remember that tip in the future, but what about the stuff we already cut up? Would you use it to smoke with? I don't think I would. I'll have to ask him how they work out. I kept a few of the logs to split for smoking....looking forward to using that.