Can you get magnet marks off refrigerator?

My refrigerator appears to be an enamel finish, light tan in color. I first tried COMET on a wet wash rag, that seem to help some, but did not really come close to removing the magnet stains totally. Then I used an old toothbrush, wet with water and toothpaste. A feeling of optimism came over me as I saw the stains begin to dissappear. It seems to work best with a good lather, so keep it wet. Most dentists recommend brushing for at least 2 minutes! May not be 100%, but you'd have to look pretty close to find them. Since I used the COMET first, I don't know if that step is necessary, or if the toothpaste alone is sufficient.