How can I make a old rusty copper pot shine its been outside?

I have a flower pot made of copper, its been sitting outside for a long time. My husband washed it, scrubbed it, and polished it but he still can't get rid of the mildew.
  2 answers
  • Juanita Bittle Juanita Bittle on Apr 28, 2015
    Have you tried cleaning it with toothpaste? Not the gel type the paste type.

  • Bea Snelleman Bea Snelleman on Apr 28, 2015
    When my copper get nasty looking, I heat a large pot of water to boiling. I then add a good amount of vinegar, mix it, and then salt. Mix again. I immerse the copper and it usually comes out pretty good. Its the heat that helps. Do it all the time.