We need to remove vinyl border adhesive from a wall. The adhesive was probably solvite border adhesive, which is water soluble when wet but which dries into a rubbery film. A steamer made no impression. Hot water and lots of scrubbing oops of a small area simply made the adhesive roll into small balls, but not come off. I tried various solvents (white spirit, meths, aftershave) all to no effect. Can anyone suggest how best to get rid of this stuff? Thanks.