ZINSSER DIF liquid ready-to-use wallpaper stripper is a fast-acting enzyme formula that works in minutes to remove nearly all types of wallpaper, decals, Contact paper and dried adhesives. The unique, no-drip liquid eliminates runny messes and stays wet longer to reduce the need to constantly remoisten paper. DIF Liquid is a clear, low-odor, surfactant-rich liquid that is non-staining and leaves walls clean.