Review on Biodegradable Lubricant for Master Lock 2300D by Dustin Keller

It took me a long time to get my mailbox key into the lock of our mutual neighbor's mailbox. I would have to start and stop, adjust the key several times before it finally worked. After using this lube for the first day and inserting and re-inserting the key several times, it started to work better pretty quickly. On the second day I think he had time to do some work there. Now it's like putting the key in the cloud because there are absolutely no restrictions, when my key is put in the lock it just slides in and doesn't even touch anything inside. This is amazing! I would recommend this as a lock lube as it is the best I have ever used.