Practicing good hygiene is probably the best and most effective way of combating stuff like this. You would be surprised how many times you put your fingers in and around your mouth eyes ears nose, etc.
I remember watching a show that put invisible ink on people's hands, then after a certain period they used a black light and showed where the ink was transferred. It also showed how effectively they were washing their hands as well.
This discussion reminds me of the SNL parody commercial for Fecalvision glasses.
Liberals never met a slippery slope they didn't grease.
-Me
I wish technology solved people issues. It seems to just reveal them.
-Also Me