Please can someone recommend what I need to remove very old stains ie paint varnish oils etc for patio slabs. I have tried bleach, caustic soda, paint remover.
thanks everyone, I will try the drill and pads. if all fails I will use TNT
Cola - The police in America, allegedly, use it to clean blod stains etc off the pavements etc.
Try dropping a penny in a glass of it overnight and see what happens!
Simon