Hey I have learned your job will only be as clean as your work environment. I used to never wash my hands when turning wrenches. But now I can nearly keep a white shirt clean when working on my stuff in the shop. I can change my oil in a suit if I need to. I just like my shop to be clean.... It works out better for me that way,
Sometimes I take all my sockets and wrenches and polish them with microfiber towels and then i take all my bolts that i remove and trace all their threads with a knife blade just to make sure the locktite is cleaned out of the threads.... Hey its an OCD thing.
Guilty as charged - I have the same obsession