Just got my 4 oz. spray bottle of citrus stuff down. Mine came from a Sherwin Williams paint store in MI. It is called Quick' n Kleen and the label says it removes adhesives, tar and a lot of other stuff from carpets clothes. Of course test before using on your whole item.
Just used it on my hands to get some canned foam off, it does leave a slight shiny coating even though I washed with Dawn.
Have had the bottle for ages and still have 1/3 left, bought it at $2.49. Made by Liberty Technologies from Bay City MI, less than an hour from me. And it is Earth Friendly to boot, no more sticky foam on me*Ü*