Mix 1 cup borax and 1/4 cup lemon juice until they reach the consistency of a paste. If you have a larger sink and want to remove marks from the entire surface, double the measurements to make a larger batch of cleaner.
Apply the borax and lemon juice directly to the metal marks on the sink and rub at the stains gently with a damp sponge. Be careful not to press too hard. Borax is mildly abrasive, and although the metal marks may seem to be embedded in the porcelain, they are really on the surface layer only.
Rinse the affected area of the sink with warm water.
Examine the sink to make sure the marks are completely removed. If not, repeat the borax and lemon juice paste until the marks are gone.
Dry your sink with a clean towel to avoid streaks.
Things You Will Need
- 1 cup borax
- 1/4 cup lemon juice
- Clean towel
- If you have a colored porcelain sink, test the borax and lemon juice in a hidden location to test for colorfastness.