Ba.e of the Black Granite Composite Sink! By Diane. i have been cleaning my sink with a granite cleaner since we bought it but not diligently .Step . Remove tough stains from a granite composite sink by reaching for your choice of some common household products. Spray the stains with a mix of white vinegar and water or apply a paste made with baking soda and a li.e water to the stains. Rinse the sink and then wipe it dry..Apply teaspoons of olive or mineral oil to a clean, dry cloth. Wipe the granite sink thoroughly with the cloth to evenly distribute the oil in a thin layer. Allow it to sit for a minute, then buff away the excess with a clean part of the cloth to restore color and shine..How to Clean a Granite Sink. Granite is a popular material used for sinks today, as it adds both durability and e.ance to your kitchen. Sinks made from .
Method . Removing Hard Water Stains. Select a non a.sive scrubbing pad. Dampen and put soap on the scrubber. Scrub the sink. Rinse the sink. Dry the sink using a dry, soft microfiber towel. Apply olive or mineral oil to a cloth. Rub the oil all over the sink. Wipe excess oil away..