Poster Putty, Pliable And Reusable, 2 OzSafe, easy alternative to nails, glues or staples.Adheres to most clean, dry porous and non-porous surfaces like: wood, tile, linoleum, cinder block, brick, metal, plastic, porcelain, mirrors or glass.Not recommended for use on flocked or loose wallpaper and on peeling or fresh paint.