Peel off as much of the sticker as possible by hand
Rub the residue with your finger or a soft cloth to lift it
Apply rubbing alcohol to a cloth and wipe the residue
Use white vinegar on a cloth to loosen the adhesive
Dab a small amount of cooking oil or baby oil on the residue
Let the oil sit briefly, then wipe it away
Use warm soapy water for light residue
Scrape gently with a plastic card or plastic scraper
Apply a commercial adhesive remover if needed
Wash the area with soap and water after removing the residue