Choose a color of Elmer's Wood Filler that is closest to the color of the wood you will be filling. Once dry, the wood filler can be painted, but it is best to match it as close as possible to the rest of the piece.
Make sure the hole you are filling is clean and free of any dust and debris. Wear latex gloves to avoid skin irritation from the wood filler.
Squeeze the wood filler into the area that needs filling and level it off with the putty knife. Try not to overfill the gap too much. However, slight overfilling may be desirable, depending on the hole, to ensure smooth edges.
Let the filler dry completely. Small fixes may only require a few hours. Larger areas will need up to 24 hours.
Sand the dried wood filler with sandpaper until smooth. For larger areas, you may want to use a rotary sander. If the dried filler has shrunk or is not completely smooth with the edges, add more filler and repeat the process.