Does anyone know how to remove an oil stain from composite decking? I have been treating the exterior logs on our home w/ boiled linseed oil. I thought I had the decking protected w/ a tarp but inevitably I dripped. I tried paint cleaner (no luck) I tried dawn dishwashing liquid in very hot water and a stiff brush (no luck). I tried a power washer (no luck). So now I need some expert advice... PLEASE HELP....thank you!