What worked for me was a weak solution of Simple Green and wiping it off with a microfiber cloth. You can buy the Simple Green in the automotive section of Target or Walmart. If that doesn't do it, try a stronger solution and let it sit a bit. Make sure you try it someplace where it doesn't show though, just in case.
Login using the form on the top of the page to post feedback (if you are a registered user). If you have not yet registered, click here to do so. It's FREE!.
