I see both Oxidate and Zerotol use Peroxyacetic Acid at 2% and 5% respectively. Oxidate is approved for food and tobacco while Zerotol is not. Just so happens that I got plenty of Zerotol. Is Peroxyacetic Acid safe? I have a little PM on a couple plants (sprayed w greencure yesterday) and would like to drench new plants before innoculating as I have had little root rot (DWC) last run.