Is there a good way to remove labels and sticky residues?

Old identification or QC fault labels can be difficult to remove. They either leave sticky adhesive behind that is insoluble by commonly available solvents like isopropyl alcohol (IPA), or are so dried and baked-on that they won’t budge. While consumer products like Goo Gone or bug-and-tar remover are common to see on workbenches, Chemtronics offers a cleaner that is actually intended for PCB repair called The Mighty Pen®. It contains a fast acting solvent that breaks down dried and sticky adhesives.