Set your walls free from tired, old wallpaper - the easy way - with Rust-Oleum Zinsser DIF Liquid Concentrate Wallpaper Stripper. This powerful, enzyme-based solution soaks in to easily break down tough wallpaper paste. Just add water and watch it work. Makes 7.5L (2gal). Enough to strip a 4m x 8m (12' x 24') room. For the best results, prep walls with PaperTiger Scoring Tool.