Use Sandpaper for Light Scratches

• 1). If you have lighter scratches that don't go deeply into the wood, simply sand the area until the scratch disappears and the trim is smooth. Use a medium-grain sandpaper.
  
  
• 2). Wipe the sanded trim with a dry microfiber cloth to remove the dust. Then, use the bristle attachment and vacuum around the trim around where you sanded.
  
  
• 3). Prime and repaint the area using the same paint color as the rest of the trim.
  
  
• 4). If the scratches are extremely shallow or only in the paint and not the actual wood, you can skip the first three steps and simply fill the scratches in with paint.
  
  

Use Wood Filler for Deep Scratches

• 1). Use a spackling knife to fill in the deep scratches with the wood-filler compound, and smooth the filler so it meets the trim's surface.
  
  
• 2). Let the wood filler dry completely. Depending on the type of wood filler you purchase, this can take 1 to 2 hours or up to 12 hours, so be sure to read the instructions on the package.
  
  
• 3). Sand the dried wood filler using medium- or fine-grain sandpaper. Sand the wood filler until it is smooth and flush with the rest of the trim.
  
  
• 4). Wipe down the sanded trim with a microfiber cloth and vacuum around it to get rid of any dust left over from sanding. Prime and repaint the trim.