It’s Lift Off 2 that you need for gum

Last Friday’s Hospitality Magazine website in Australia reviewed a biodegradable stain removal product, Lift Off, invented by chemist Gregg Motsenbocker for removing stains, including the ongoing challenge of discarded gum.
As the magazine notes, the product has no ammonia or solvent smell and “…it can be used on any surface without damaging or degrading the surface or the environment.”
There are three different varieties available, but when it comes to gum, it’s the second variety that you want:
Lift Off 2 removes oil and petroleum-based stains such as oil, grease, labels, chewing gum and candle wax, all of which will disappear from areas such as metal, plastic, wood, glass (labels), hair (chewing gum), carpet and fabric.