Extra care must be taken when cleaning a stainless steel sink. Stainless steel can scratch easily if steel wool or some scouring powders are used, and harsh chemicals, such as bleach, can damage the color and even cause pits in the surface. The best cleansers to use are non-abrasive and non-toxic and they won't break your budget because they can be found right in your refrigerator and cupboard. Here are some instructions for removing stains from a stainless steel sink.
1. Cut a fresh lemon in half and rub the cut side on the stain in your sink. Different stains respond to different treatments, so if the lemon doesn't work, there are other options you can try to remove the stains.
2. Leave the lemon juice on the stain and sprinkle on a little common table salt. The two elements together have a light bleaching action, yet it's non-toxic.
3. Wet the surface of the stain with water and sprinkle on a little baking soda. This works as a non-abrasive scouring powder. Rub with a damp soft cloth.
4. Place the stopper in the sink's drain and pour some white vinegar on the stain. Let it sit for 30 minutes. If the stain is even more stubborn, heat the vinegar on the stove top or in the microwave and pour the warm vinegar on the stain, again allowing it to sit for 30 minutes.