Use a heat gun and a plastic scraper. They come off really easy. Mine were 12 years old when I did it. If it leaves the sticky residue on, then you can use goo gone to get it off. Get it all off, then wipe it down with rubbing alcohol and you are good as new.
:lol:The dangers are endless.Unless you burnt the end of it.
WD40 is also very good at getting glue residue off.Spray it on,cover in cling wrap for a while and then most of it wipes off.