There is a chemical called Oil Flo 141. I'ts brilliant for that. We put it in a spray bottle to make it last longer. You don't need much. Spray the glue, rub with a cloth or a sponge and leave it a minute if you can - do all the stickers like this and then go back and clean them as normal and it just dissolves it.[/quoteHi, Good tip that by putting it in a spray bottle, will do it myself. An alternative is wetting the window then use a Brillo pad.Kevin WINDOLENE.
soap up really well with your stripwasher then simply use a brand new scraper(i use an unger 4 in).this has always removed sticker glue on any windows ive cleaned in16 years of window cleaning!! dazmond