Not sure how large of an area you need to clean but brake clean sometimes works well. Get the non stink type, Advance used to sell a good cleaner under there house brand wearever. Not sure if they've changed it as I went to a local solvent supplier and they supplied it in 55 gal drums at a substantial savings. Do a kwik squirt on a paper towel and if it's near odorless try it.
It is flammable so keepthat in mind