Cleaning your baseboards can be a little more complicated if the baseboard has been filled with silicone or decorator’s caulk. These filling agents can have a sticky film which provides a prime spot for dirt and dust particles to reside. Start by using the methods listed above in this article. If the white vinegar and water mixture does not adequately remove the dirt and the silicone or caulking still looks unclean or discolored, you could try going in with some hydrogen peroxide. This natural cleaning agent will lift the color back to white and is extremely tough on stains. However, always check the manufacturer labels on both the hydrogen peroxide and the silicone or caulking that has been used to check that this won’t result in any lasting damage and need for any potentially costly replacements or repairs. If hydrogen peroxide is not a suitable option, you may need to touch up the edging with a new coat of paint to cover any discoloration.