Warm the sticker with a hair dryer for 30 to 60 seconds
Lift a corner with a plastic scraper, credit card, or fingernail
Peel the sticker off slowly at a low angle
Reheat stubborn areas as needed while peeling
Apply rubbing alcohol, adhesive remover, or soapy water to leftover residue
Let the remover sit for a few minutes
Wipe the residue with a microfiber cloth
Use a plastic scraper for any remaining bits
Clean the window with glass cleaner
Repeat if needed until the glass is clear