I've just taken all the kids art work off the wall thats its displayed on ready for moving and the whole wall is covered in blu tac marks, like greasy stains. I've scrubbed with hot soapy water but its not had any effect at all. We want to leave the house in a good condition and I wouldn't describe this wall as a good condition. We don't have the paint any longer and can't even remeber what it was. Plus I don't have time to paint now. What should I do? I need to get these marks off.