Gorilla Mounting Putty is ideal for hanging light weight items in place of traditional tapes, push pins, and fasteners. Squares are non-toxic, repositionable, and long lasting. Great for use indoors and temporary outdoor use. Use on paper, painted walls, wood, tile, metal, posters, plastic, glass, and more!Directions:1. Ensure both surfaces are clean and dry.2. Remove desired amount of putty squares for application. Use directly from package without kneading and apply approximately 4 squares of putty per 1lb of weight. Not recommended for hanging objects over 2lbs.3. Apply square(s) to the object being mounted allowing for even distribution of weight.4. Press object firmly in place for 30 seconds to allow Gorilla Mounting Putty to conform to the surface and create a strong bond.Tips for Use:• Apply when temperature is above 50°F. Recommended in use temperature range: 50-85°F (10-30°C)• Remove mounted items carefully and dab to lift excess putty.Important:• Not for use on applications where injury could result if mounted item fell.• Not recommended for use on freshly painted walls or flocked wallpaper.• Avoid direct exposure to water.• May stain some surfaces.Click the Gorilla link at the top of this page to see more great products from Gorilla.