Take a trip through your local hardware or paint store and you might be taken back by the wide variety of deck treating products on the market. What’s the difference between stain and a sealer? How do you know which product is right for your deck? This primer attempts to answer those questions. Let’s start at the biggest decision you’ll have in the deck treatment isle: “Do I seal or stain?” This choice is up to your preference, but they each have their own benefits and drawbacks.