Unfortunately, today, it would appear there has been some kind of oil spilled on some of them - our fridge/freezer got a new compressor fitted to it and the engineer left me to dispose of the old compressor. As I was carrying it to the car to take it to the recycling plant, I think there has been oil in it which has spilled out.
We have poured Fairy Liquid over the area and hot soapy water and scrubbed the area, but when it dries the marks are still there, although perhaps slightly paler.
Is there anything else we can use to get rid of the oil marks on the black limestone?
