A good referral partner of mine has sent me a unique job to do. A customer had a tongue and groove porch installed and applied a oil based stain. They were not happy with how it attracted dust and dirt so they attempted to apply Thompson water seal over the oil base. Now its just pooled on the surface because of course it did not penetrate through the oil base. They just want the Thompson water seal removed so they can decide what to do from there.
I was thinking to use some soap or a mild degreaser and hot water but this is definitely a situation I have never ran into. What would you do?