I live near the sea water & have constant problem with rust on my railings, door handles, outdoor lights, etc. They are made of high quality marine grade stainless steel, but still become rusty slightly after a while. Until a friend of mine recommended to try "rejuvenating stainless steel maintenance kit from the Lighting Outlet". I am very happy with result. It is very easy to apply & clean minor rusts without problem. Of course, very heavy rusts on regular steel require different treatment, but that's a different story. For my purpose, the product serves me well.