Got a call from a double glazing company today, they say they fitted some new windows for a customer and while removing the old frame in the lounge some black dust had fallen onto the dust sheets but was so fine its penetrated and got onto the carpet.
The mangager gave me the impression she was trying to get a new carpet out of them.
I assume the black dust is similar to what you get when drilling into a wall, what would be the best product to use on this?
Thanks
Paul