Peel off as much of the sticker as possible
Rub the residue with a cloth soaked in warm soapy water
Apply a small amount of rubbing alcohol to a cloth and wipe the residue
Use white vinegar on a cloth to loosen the residue
Apply cooking oil, baby oil, or mineral oil and let it sit briefly
Scrape gently with a plastic card or plastic scraper
Use a commercial adhesive remover if needed
Wash the area with soap and water after removing the residue
Dry the surface completely