Absolutely you can! You can even think of it as "correcting the energy" of the deck, as sometimes we are drawn to an item that we don't want to completely wash away. We just want to ensure that the messages are clear, that they aren't to cause harm, and that they bring about an easier reading experience. Here as writers at Backyard Banshee, we do not believe you have to be gifted a brand new deck, or any of the other common superstitions. We feel it's great if you can pick up a second-hand deck, as it helps the environment and can absolutely help the previous owner.