Since 1998, Post Protector has provided simple, slide-on barrier protection for in-ground posts. It works in conjunction with the chemical preservative as an important additional layer of protection against soil-dwelling Wood Destroying Organisms. Historically, on "outdoor" post applications (deck, fence, etc.), optional weep holes are opened to provide drainage. Our new 2-piece Finish/Sealing Cap takesPost Protector to the next level by providing a profession finished appearance while eliminating precipitation infiltration.