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. For optimal performance, lubricate your lock with a PTFE Lock Lubricant. 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