In normal conditions, a lock can last for eight years. To maximise its durability, you need to do its time-to-time maintenance by lock greasing or lubrication. It prevents the lock from getting corrode and allows the smooth functioning of keys in locking and unlocking. For greasing door locks, you need to contact professional locksmiths. Professional locksmith applies different techniques for lock greasing. First, they remove the lock, out of the door, if possible. Then they clean it with strong air pressure and later by using a spray cleaner. After cleaning, they apply grease to the lock. Locksmith Houston service providers for greasing uses graphite lubricant and dry greasing agents. For instant lubrication, WD-40 spray can be used. Locksmith suggests using WD-40 in exceptional situations. Time to time lock greasing can prevent you from emergency problems. You can do self-lock greasing but for perfection must hire locksmiths.