Just put my overlays on the car about 30 mins ago. I cleaned the OEM "Ford" badges with glass cleaner, allowed them to dry and then went over both very thoroughly with a rubbing alcohol soaked cotton swab, allowed that to try and then heated both the OEM "Ford" badge and the back of the overlay before applying it. That thing stuck AWESOME! For the record, I also cleaned my hands very thoroughly with the rubbing alcohol (to remove skin oils) prior to removing the overlay from its backing.