No. Pressure treated lumber comes with a mill glaze from the factory which is a chemical component to protect the wood. You have to let the wood weather naturally for about six months prior to applying any kind of preservative. This weathering process will break down the wood’s natural oils enough to open the pores of the wood allowing the preservative to penetrate the surface. Failure to do this may result in wood damage and undesired results. However, at DeckMaster we can speed up the weathering process with our PressureLess cleaning system. Our chemicals will break down the natural oils allowing you to stain your deck right away.