My son who is football mad had a load of stickers from the 2014 world cup left over... went into his bedroom after the world cup finished and the whole of the door was covered in stickers .. knew it would be a mare to clean/paint but a neighbour said spray it with wd40?? anyhow yesterday being a nice day took the door off into the garden peeled off what I could and the sticky part still stuck to the door sprayed the lot with wd40 ,had a cup of coffee and it just come off so easily it was unbelievable ...painted it and looks really good ...another use I have found for wd40 . There was once a list on here of what wd40 can do has anyone got it.