Add a few drops of oil to the interior latch of the night latch. Then, add a drop of oil to the snip switch and to the base of the knob.








A few drops of oil should also be applied to the sliding bolt.
 Use a dry lubricant to lube the exterior of the night latch, which will avoid the accumulation of dust and grime in the locking mechanism. Puff a bit of graphite powder into the keyhole on the exterior of the night latch. Insert the key and turn it a few times, which will help distribute the graphite into the locking mechanism.
 Puff some graphite lubricant into the keyhole on the padlock. Insert a key and move it around to spread the graphite throughout the cylinder. Then, apply some oil to the shackle and shackle hole on the padlock.
Grease the interior latch and switch.
Lube the exterior of the night latch.
Lube a padlock.
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