Tom,
Thanks for the good tip. Reminds me of how I learned the cleaning power of Coca-Cola as a kid. I worked in a shoe store. We had a little workroom where we fit orthotics and made other adjustments to shoes, and also dyed them. The linoleum floor of that little room was caked with black dye. Nothing would take it off; and no one was about to get down and scrub with steel wool. I think there was years-worth of dye on that floor.
One day, in a rush to get back out front, I knocked over my Coke. It took a while (15 min. ?) to get back and clean it up. When I wiped up the Coke, I revealed a clean linoleum floor underneath! Left me wondering what it was doing to my insides, but I didn't stop drinking the stuff.