"Barb" wrote in message
...
Nope, the Steradent didn't work, Mike. Worth a try though. Just went to
Halfords, in passing, and they didn't have anything.

Just tried some vinegar and a bit of elbow grease on one spot with a
brush, and it's shifted some of it, probably the stuff on the surface.
And it's left a nice really, really clean ring round it!!!! Can't win.

I might experiment with the vinegar over a wider area, actually. It's
cheap enough and not nasty.

You need to soak it. Use some old rags and soak the vinegar in them, then
put it on the whole flag, so it won't make one bit look better :-)

You can buy vinegar wholesale. Get thewhite stuff if you can.

HTH