What is the best way to get the glue under glass film off of windows?

I removed film off of window glass and there is a thick layer of glue on the glass that even goof off isn't removing.|||razor blade. won't scratch the glass. use windex or something after.|||Alcohol 99% will work to dissolve the glue - it is a lot of work so don't expect it





to be quick - you may try a single edge razor type scrapper to remove as much





of the built up glue as possible and the alcohol will remove the film that is left|||Fresh single edge razor blade like the old school days of shaving. Then goo gone or other solvent to get the last of it