Our car magnet care guidelines are simple and easy. Firstly, make sure your car door is clean and dry when you apply the magnetic signage. Make sure the car magnet is also clean and dry. Don't put a dusty magnet on a dusty door. Despite the magnetic force of car magnets, driving does cause the magnetic signage to vibrate a little. Dust particles wedged between the car magnet and the car door will cause light abrasions that will intensify over time. Scratches are so easy to avoid when using car magnets if you follow these simple instructions. Finally, if the car doors or car magnets get wet, remove the magnets and dry them! Then, clean and dry the car doors before putting the magnets back onto them. Simple, easy and effective. That's what car door magnets are about.