Vinyl decals are not meant to do damage to any surfaces, but we also don't know what condition those surfaces are already in. If you have a dirty, roughly textured wall, or a fresh coat of paint that you are trying to apply a decal over, it's not going to give you the desired results. Also, the longer you leave the decal on the surface, the more difficult it may be to remove it. If you need a decal for long term use, select the high adhesive option. Just need it for temporary use, select the low adhesive option.