What to Do When the Key Won't Go into the Keyhole?

[LaLuke]

Prepare a brush and an appropriate amount of cooking oil. Dip the brush in the oil and apply it to the door lock, then coat the key with oil as well. This will make it easier to insert the key into the keyhole. Cut a piece of paper into a triangle shape, turn the anti-drill plate vertically, and insert the pointed end of a business card filled with graphite powder into the keyhole. Slowly pour the graphite powder in. Lay the key flat, place a small amount of graphite powder on the key's teeth, and then insert the key into the keyhole. Repeat this process gradually until the key can be inserted and removed smoothly. Rub a pencil back and forth on the surface of the key several times to coat it with pencil graphite. Insert the key into the keyhole and turn it several times to ensure the graphite powder is evenly distributed inside the keyhole.