This Wall Paper Stripper is a highly concentrated solution of surfactants designed to help strip wallpaper quickly and easily. 500ml makes up to 4 gallons of solution. Works on most types of wallpapers. Pour approx. 1/4 of a bottle into 1 gallon (4.5 litres) of hot water. Stir well and work into wallpaper with a sponge. Scoring the wallpaper beforehand will help penetration. This is essential with washable wallpaper. Leaves for 5-15 minutes to take effect then remove paper with a scraper or steamer. If there are several layers of paper process may need to be repeated. Protect carpets and furniture and mop up any spills of liquid immediately.