The two locks on my front door were becoming very difficult to operate
and sometimes the key would become stuck inside the keyhole. I was
ready to go buy new locks, but then I remembered how my grandfather
would use graphite powder as a dry lubricant for delicate pocket
I took pictures of the lubrication process and wrote up a guide. The
total cost for the lubricant was about $5 ordered online.
Here's the guide -
The locks work great now and require very little effort to operate.
Ft. Lauderdale, FL