Eric, Sometimes I have scraped a pencil for graphite along my key to lubricate a lock. But I have used this other dry lubricant know as "Moly". It is a black dry substance consisting of very tiny beads. I had used it as a lubricant for the wheels on my son's Cub Scout Pine wood derby car. It seems to work great on lock sets. Do you see anything wrong with Moly as another type of lock lubricant.