To prepare the wall for your ThunderROARus Drop Playset, please make sure that all surfaces are clean and dry. Use rubbing alcohol for cleaning by adults. DO NOT use household cleaners. DO NOT use on wallpaper, bare wood or porous, unpainted surfaces. DO NOT hang objects over beds. Use in indoor spaces 50°F to 105°F (10°C to 40°C). Wait at least 7 days to apply to freshly painted surfaces.