 But also be mindful, if you use a sander on a pressure-treated wood deck, that pressure treatment is not that deep into the wood. Not that you're going to sand off a quarter of an inch, but some of the new pressure-treated wood, I'm telling you, it's just not that deep into the wood, maybe 3-16ths, maybe less. You don't want to sand through that protection or you'll really be in trouble.