A common method of dissolving wood glue involves applying a paper towel dripping with white vinegar onto the desired area and allowing it to sit for 15 minutes. Eventually, though sometimes over the course of many applications, the vinegar dissolves the glue into a paste, allowing for its easy removal.
The paper towel should be applied directly to the glue, and the vinegar allowed to thoroughly soak into the glue and surrounding wood. Once the desired area is soaked, the paper towel should be placed over it and left to sit for 15 minutes, allowing the vinegar to break down the glue. The glue can then be tested for removal, and the process may be repeated, as necessary.