We appreciate your feedback and apologize for your inconvenient experience with this product. Regular cleaning and lubrication every 3-6 months is recommended to keep your locks operating like new. Locks used in extremely dusty or corrosive environments should be cleaned and lubricated every three months. Regular lubrication will also help minimize freezing in cold weather environments. For optimal performance, lubricate your lock with a PTFE Lock Lubricant. Lubricate both the Dial and the shackle. Apply lubricant sparingly. A very light spray(aerosol) or a few drops (pen oiler) is all that is needed. Allow lubricant to drain deep into the lock. Tapping the lock on a table will distribute the lubricant inside the lock and loosen frozen or sticking parts. Wipe excess lubricant off the lock, shackle and dials. Let the lock air dry. Once dry, the lock is ready to be put back into use. NEVER use dry graphite, or a silicone lubricant. Graphite is often applied in excess, which interferes with part movement. For more information regarding this product, or any others from Master Lock, please contact our Customer Support at 800-464-2088 US, 1-800-227-9599 CAN