Duct tape is one of the handiest things in the world. Just about everything can be fixed with a little duct tape. But when you remove the duct tape, the sticky residue can be a nightmare to remove. On most surfaces, WD-40 will break up the residue. Spray it on and let it sit for a while. Work the residue off with a towel. A second application of WD-40 may be required. If the tape was stuck to a painted surface, blot the stain with a cloth soaked with WD-40. Always do a test spot first! Then carefully remove the residue with the cloth. Clean the surface as you would normally after removing the residue to remove the remaining WD-40.