 and that's probably the best you can do in terms of prepping that surface for stain. Now, you used the word seal, talking about sealing a deck. Sealing a deck is not only going to do much for you. What I would recommend you do is stain the deck, and, of course, you have choices on stain. They come as transparent, semi-transparent, and solid color, and I'm a big fan of solid color because the more color you put on there, the longer it lasts, the more protection the wood gets as a result. So that's basically where you're at. I would either...