Too much sanitation is a lot like spraying insecticides, you kill off the good stuff too. Prior to starting my life in construction/farming work, any wounds I got on my hands got infected. Seriously, all of them! I washed my hands more times in a day than I could count. When I started working in the dirt all day, and wounds had to wait to be washed, the infections stopped. I can slice my hand open, feed the goats, clean the coop, weed the garden, and wait until I'm done to wash it off with no adverse affects.