7 Clever Ways to Remove a Sticker from Plastic - Tips Bulletin Use the edge of a blade to work the sticker off the plastic and reapply the heat if necessary. After you remove the label, use a pencil eraser to rub away the leftover adhesive gently. Using Vinegar and Baking Soda to Remove Stickers from Plastic For stickers that are old and stubborn, try using white vinegar and baking soda to remove them.