Yes. This isn't something that you need to worry about for cars, but we understand that some people are apprehensive about placing a bumper sticker on their vehicle in the first place. To reassure you that our stickers and decals are safe and wont ruin your cars finish, we have provided instructions detailing the proper way to remove your sticker or decal from your car or other surface. This will, of course, depend on the quality of your vehicle paint. We cannot guarantee that damage won't occur due to a poor or old paint job. In regards to walls, if your walls were not properly cleaned prior to painting or a low grade basic paint was used, then the wall decal could potentially pull the paint off the drywall.