I mentioned it to a fellow at Lowes and he told me to let it completely dry out and it would take around 90 days. I have some sheets of plywood for a coop now on my picnic table that I have left there for a few months and they have lightened up somewhat in color so the wood preservative they use must have dried out. I'm getting ready to prime it and paint it. I have to replace some wood on a coop.