Unfortunately, from time to time, some household items come out of standing or begin to carry out their functions poorly. Moreover, these malfunctions often do not depend on the quality of the purchased subject. Not from the indemnity of the manufacturer brand. So, very often interior doors begin to creak in the process of prolonged use. As a rule, such a creak only annoys the residents of the apartment or house and many are already beginning to think that it is time to call the master for the repair of doors, the installation of locks from Mitino. Of course, if you have to perform a large amount of door repair, then in this case it is best to use the help of professionals. In addition, you can additionally change the old door mechanisms to more reliable – new and modern. Yes, and door locks, they also need replacement if their service life is large enough and recently there have been cases of not locking or not unlocking the door. Do not postpone such work at the last moment that you can’t get into an unpleasant situation, for example, when you need to urgently run somewhere, and you were locked in your own room and the lock is faulty. But besides such serious repair work, there are preventive work that each owner can do it himself. This is the lubrication of door loops and parts of the lock mechanism. So, for lubrication, you can use machine oil or graphite. To do this, you need to remove the doors if possible from the loops, grease all the mechanisms and put the door leaf back. To lubricate the door lock, you need to unscrew its outer part to see the mechanism on which you apply a few drops of oil, scroll the latch several times and twitch the handle, then apply a few drops of oil, and only after that collect the outer part of the door lock.