We often receive emails from people who have removed tape which has been on a surface for a long period of time and they are now trying to get rid of some adhesive residue which was left behind on the surface. The first point to make is that removing adhesive from a surface should be done very carefully. One quick test would be to try using the adhesive side from another piece of tape like duct tape to pull it off. If that doesn't work you can try using solvents; however they should always be tested on an inconspicuous part of the surface first to see if they damage it. MEK and Toluene are the strongest two and can be found at hardware stores (since they are the strongest greater care needs to be taken when using them). The next two solvents would be acetone and alcohol or you can try looking for an adhesive remover/citrus cleaner such as Polyken 41 or 3M 08987 which we sell on the site or Goo Gone or WD-40. I hope this helps. Thank you.