Clean and dry both the vehicle and magnetic sign prior to application. Dirt or dust on either the vehicle or the magnetic sign can cause scratching of the painted surface. When properly cleaned and cared for, magnetic signs are rated for a functional life span of 6 to 12 months of use. 
efore affixing your magnetic sign to a metal surface, please make sure all surface paints, clear coats and waxes are cured (hardened). Approximate curing times are: 90 days for paint, 60 days for clear coats, and 2 days for wax. For more information, please consult an auto paint professional.Please Note: Magnetic signs will not work on Emron® paint, vehicles with non-magnetic body panels (such as fiberglass), nonferrous metals like aluminum, plastic on Saturn® cars, vehicles that have been repaired with Bondo®, simulated wood-grain siding, or vehicles that have been painted numerous times.Clean the metallic surface and the magnet with mild detergent. Wipe dry with a soft cloth or allow the surface to air dry normally.Please Note: Magnetic signs can become stiff in cold weather or locations and may not properly grip the vehicle panels. Please use caution when using your magnets in these conditions. If placing or repositioning magnetic signs on a vehicle under cold conditions, doing so in a heated garage is recommended. The vehicle should be given time to reach room temperature (60°F (16°C)) before applying, removing, or repositioning magnetic signs.