Hi Guys I need to clean up a shop front which is covered in sticky tape of all types pretty much all over. I cant really use a scraper on it as the window is coated in anti glare / shatter proof film so using the scraper will almost certainly scratch or worse still cut the shatter proof film. I have used sticky label removal spray with some success but its slow and not perfect, white spirit or terps is next on the agenda but I am not 100% sure if this will stain the film on the glass.