How to Remove Stickers from Home Glass & Windows | Glass.com® Use a new, clean razor blade held against the glass at a 45-degree angle. Push the blade under the sticker, working from the outside edges in. Try this method only if you're comfortable with it, and proceed with caution. Razor Blade Scraper, 2 PCS Razor Scraper Tool (Extra 20 Metal and 10 Plastic Blades) View In Store