If you use magnetic signs for your vehicle, best practices say (and industry experts) remove signs at least once a week, clean any moisture buildup between vehicle and sign and reapply. To apply, always apply sign to clean surface and let one edge of the sign contact the vehicle in the desired location. Then let the magnetic power do the work as it puts the sign into place from the starting edge to the opposite side. We often hear a sad story about “my signs blew off down the freeway”…Protect signs when not in use by adhering to a metal surface, don’t leave them just laying around. With a little care, your magnetic signs will be with you for a long time!