Yes, you can use vinegar to clean wooden furniture, but you need to know how to do it properly. For starters, you'll want to use only distilled white vinegar for cleaning. The reason is that distilled white vinegar has been filtered through potash to remove minerals, which would otherwise dull the finish. You should also know that vinegar should never be used for cleaning delicate materials, such as furniture. Also, when using vinegar, you should be sure to test small areas of the surface.