Thats a good question, I never thought to look at the inert ingredients, maybe the Sawyer inert ingredients are different than Gordon's???
Might be a good question to ask Sawyer!? As their response to me(which you saw) was that it was safe for the application to those fabrics! There was some discussion at one point about the degradation of fabrics from the application of Permethrin, so it might be plausible to say that it is the inert's that were possibly causing it??? All I know is I have treated almost everything with Sawyers and have yet to have a issue, also Cannibal has been doing the Sawyer treatment for quite sometime without issue as well!
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