Sometimes politicians disappoint, opinions change, and favorite brands go downhill. These things might make you want to get rid of a bumper sticker. The same goes when you decide to resell a vehicle. Regardless of the reason, be sure to use one of these safe techniques that won’t harm your car: Adhesive Removal Products Think about buying a cleaning product like 3M Adhesive Remover or Goo Gone. It will remove bumper sticker decals and residue along with other sticky things like chewing gum. Apply it to the sticker and leave it there for several minutes. Wash the bare surface afterward. An alternative is to use WD-40. Peel away one corner of a sticker and spray it. Isopropyl alcohol or water and soap