One of our customers is having a refit in their kitchen. ( big commercial kitchen )
The boss of the refit company has used a permanent marker to map out on the Altro the proposed layout of the new ranges etc.
It is everywhere and none of it will be covered when everything is installed.
They have tried white spirit, detergent, scourers and just about anything else you can think of but nothing is shifting it.
We will be cleaning the floors when everything is finished, so is there anything that may remove it.