whink rust stain remover 32 ounce - 2 pack whink 32 oz., rust/stain remover, #1 pure liquid rust stain remover since 1947, this convenient liquid formula quickly & easily removes rust stains from white sinks & white toilet bowls as well as colorfast fabrics & carpets, read precautions & directions before using, note: not a general purpose rust remover, this is an acid-based product. this product adds a great value. product is highly durable and very easy to use. this product is manufactured in united states.