Your key getting stuck in a lock is also a clear indicator that the lock is broken.  Before that happens, however, your key will first struggle to unlock the door, and it will be a struggle to remove it from the lock itself.  When the happens, you need to call us to help you with this.  This little annoyance can be dangerous for the health of not just your locks, but also your door handle, the door itself, the hinges and the frame.