Has anyone used an aussie product called "Liquid Hammer", I have used acid based cleaners in the past but found that upon some applications it does more harm than good, so this product seems to fit the bill except for the
price $$$ Ouch!, Nothing worse than buying an expensive product only to find that It doesn't work,Hopefully someone has tried it and can comment on It's effectiveness, failing that has anyone an old formular that they would like to share? ie: lemon juice and baking soda!.
http://www.liquidhammer.com.au/home.htm