There are a few different options for adhesive removers, depending on what type of adhesive you are trying to remove. For general purpose adhesives, such as tape or sticker residue, Goo Gone or rubbing alcohol can be effective. If you're dealing with a stronger adhesive, like super glue, nail polish remover (acetone) will usually do the trick. You can also try heating up the adhesive with a hair dryer or heat gun; this will sometimes make it easier to peel off.