I don't know why you didn't get a response to this yet...
Here is a quote from the Woody Pet website. Woody Pet is pretty much the same thing as Equine Fresh. I am pretty sure that I have read the same thing on the Equine Fresh site in the past, but I can't locate it right now.
http://www.woodypet.com/horse.html
Raw White Soft Wood Shavings and Sawdust undergoes extreme processing which extracts most of the resins, oils, tars, acids and water from the wood fiber. Exiting the milling process the product is completely sterile in granulated form and has become an extreme absorbent. Looks like, but does not taste like Granola. We have eliminated the Dangerous Aromatic Hydrocarbons which cause Hives and Respiratory Irritation (Coughing) for horses.
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