Zinsser Paper Scraper easily removes old wallpaper or residual adhesive after applying DIF Wallpaper Stripper. Paper Scraper is safer to use than razor-edged scrapers or putty knives because the blades are covered and held at the perfect angle for the best scraping effectiveness with no wall damage. The non-razor edged replaceable blade is reversible with two cutting edges for quick removal of wet wallpaper and the “high points” of the wall without damaging the surface. The blades (purchased separately) can be quickly removed without tools for cleaning or replacement.