- 1). Add a few drops of mild liquid dish soap to a cup of lukewarm water. Do not use dish soap that contains bleach or anti-bacterial soaps.
- 2). Dip a sponge into the soapy mixture and rub it over the composite sink until you've removed all or most of the dirt and soap scum.
- 3). Add just enough water to 2 tbsp. of baking soda to make a thick paste.
- 4). Rub the paste over any areas of the sink that are still dirty or stained.
- 5). Rinse the entire area with clear water.
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