1/2 cup (125ml) vinegar
While bumper stickers are an incredibly popular means of self-expression, they can become a hindrance if you want to sell your car, and their adhesives make them notoriously difficult to remove-unless you know the vinegar secret. Soak a sponge in 1/2 cup (125ml) vinegar and use it soak the bumper sticker thoroughly. Wait 30 minutes and the edges of the sticker should start to come undone. Work slowly and carefully pull the sticker away, applying more vinegar as necessary to dissolve the glue. Rinse thoroughly with fresh water when you’re done.