Asperilligosis (sp?) yeah that stuff can get to you !For me, I think it is the mold that develops a couple of days after they are delivered. The pile gets super hot, and when you dig in lots of gray dust goes up in the air. I got my last wood chips in late August, spread them as fast as I could throughout early Sept, so they were never rained on or anything. If I dig in the garden even now where the chips are, I will cough the next day.
Fresh or dry wood chips don't bother me.
My last chips came from that same CL ad, btw.
http://www.nlm.nih.gov/medlineplus/ency/article/001326.htm
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