Wet the surface with water.
Sprinkle scouring powder over the rust stain.
Rub the scouring powder into the surface with a plastic scrubbing pad. Scrub in the direction of the stainless steel grain and work until the surface rust stain is gone.
Rinse the area with water and continue if the rust stain is still visible.
Dip the scrubbing pad in white vinegar. White vinegar is a mild acid that will counteract an alkaline stain. It is natural, nontoxic and food grade.
Scrub the pad over the brushed surface along the grain. Work until the stain is gone.
Rinse the surface with water and dry it completely.