[QUOTE 5553514, member: 9609"]sometimes when I have been on farm work and I have stopped for my piece  (dinner)  when finnished I notice the fingers I have been eating with are nice and clean
joking aside, there have been times in the past when my hands are so bad with oils, greases and paints that I have given them a quick rinse with petrol or white spirit,  it's a good cleaner.  But I now learn apart from the obvious fire risk it is far from a wise idea, so don't now[/QUOTE]
I always reckon we probably evolved gut flora to cope with most of that 'natural durt'.
But then killed off that capacity to cope with dettol, and "Kills 99% of all known germs.. (Leaving the other 1% plus the unknowns to flourish unhindered?)
I do wash my hands, before lunch.. Sometimes. 
But ya know, sometimes yr in a rush, and yr hungry.. 
Cast iron biome here I think, after a lifetime of living and working in utter filth 
 
But its 'organic' filth, so therefore very healthy 
