Lubricate Door Locks...but how?

[YarisSedan]

http://www.amazon.com/Panef-Corp-Pow...owder+graphite

this is the brand i keep in my tool box i usually sprinkle some on the key and insert it and turn it a couple of times. Careful when squeezing the tube a lot will come out usually i just tap it a few times. Works good for sticky zippers on your jacket as well