Make it a fright to remember with our terrifying window and wall clings. The great thing about window and wall clings is that they have been designed to stick on smooth, non-porous surfaces such as glass, and when you're done will come clean off without any messy or sticky residue. Simply lightly press the wall decal onto the surface and use a soft cloth to press any air bubble outwards. Always read packaging before use. Warning: Keep away from fire. This is a decoration not a toy. Always read packaging.