Wear gloves and ensure the area is ventilated
Cut along both edges of the silicone sealant with a utility knife or razor blade
Lift and peel away the loosened sealant with a scraper, putty knife, or your fingers
Apply a silicone sealant remover or adhesive remover to remaining residue
Let the remover sit for the recommended time
Scrape off softened residue with a plastic scraper or razor blade
Wipe the area with a clean cloth
Clean the surface with rubbing alcohol or a suitable cleaner
Repeat if any residue remains
Wash and dry the area before applying new sealant