Doug Kanter writes:

Supermarkets carry a product called Goo-Gone. Works nicely, based on
some sort of oil, probably citrus if the smell is any indication.

Goo-Gone is just overpriced naphtha, with a little citrus perfume, to make
you *think* it is citrus oil. Mineral spirits, lighter fluid, Coleman
fuel, etc., are cheaper versions of the same, minus the perfume.