Insisting on drink coaster use may seem like a fussy obsession – until you find a water stain on one of your prized pieces of wood furniture. Whether from condensation on a drink, a leaky plant pot or a spill, water that isn’t quickly cleaned up can leave a stain on wood. Once fully set, a water stain generally cannot be removed without refinishing the wood, so you’ll want to move quickly after discovering a stain. Past several days, the possibility of repairing a stain becomes unlikely. Fresh stains are usually white, while old stains often turn black. If you come across a fresh water stain, try these three tricks in order to see if you can erase the damage.