DIF, Gallon, Ready To Use Gel Wallpaper Stripper, Removes The Mess From Removing Wallpaper, Easy Application, Non-Drip Gel Clings To Vertical Surfaces, Extended Action Enzyme Formula Stays Wet Longer & Penetrates Deeply To Remove The Most Difficult Wallpapers, Dissolves The Most Stubborn Adhesives Including Clay Based, Non-Toxic, Odorless, Ideal For Stripping Wallpaper In Occupied Areas.