When to lubricate a lock & what with?

[dirtymoney]

What's the favored lubricant around here? And when should you use it?

[Squelchtone]

I live by Mil-Comm's Lock Saver spray, and use it to maintain my fleet of locks I bring to conventions or locksport meetings so that people learning how to pick are actually picking a lock that doesn't have stuck pins and everything works smoothly giving them or me (if I'm the one picking) a better chance of success.

http://mil-comm.com/index.php?option=co ... &Itemid=65

Squelchtone

[alexwaldron]

I've had good results with powdered graphite myself although it can be messy. I use it after re-keying a lock to make everything smooth for the customer or before picking a lock.