€¢ Unique enzyme formula €¢ Powerful concentrate €¢ Great performance €¢ Removes residual paste €¢ Economical; just mix with warm water €¢ Easy to apply by sprayer; roller or sponge €¢ Size: 635 mL (22 oz) >> Set your walls free from tired; old wallpaper the easy way with 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."