Double-sided tape - how can you get it off glass?

[LaBelleDameSansPatience]

When DD was small, extremely overprotective DH stuck paper with double-sided tape over the small panels of old glass on a glass-fronted bookcase, in case she should fall through. She never came anywhere near it.
Now 6 years later, I would like to get the horrible sticky remnants of the glue off the glass panes. I have tried WD40, windolene, oil, scraping with a razor blade, warming with a warm wet cloth ... all ideas from google.
Has anyone, ever, managed to get this stuff off???????

[justjuanmorebeer]

Nail varnish remover or vodka

[mareseatoatsanddoeseatoats]

Sticky stuff remover from Lakeland. It's prices about £8 but good size bottle that will last ages. Fab stuff.

[mineofuselessinformation]

Alcohol hand gel. Smear it on thickly, leave for a while, then scrape with something smooth and rounded (a protractor works well!)

[LaBelleDameSansPatience]

Ooh ... lots of ideas I haven't tried ...

[tethersend]

Best is lighter fluid IME.

WD40 a close second.

[reallybadidea]

Meths works best ime.

[Mydearchild]

I use white spirits gets it off a treat

[gingerdad]

Hairspray works well.