When does the Q Magnet quit working?

Q Magnets should continue to work provided they have not been damaged and are in the proper location. If the device is placed improperly or receives a severe shock damaging the generator, the device will not produce the relief it was designed to give. Also, if it has been exposed to high temperatures for a prolonged period of time, damage will occur and the device will lose its effectiveness. Always be certain to check placement of the device first and consult the directions for use.