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On Friday, 17 July 2015 13:31:41 UTC+1, wrote:

Well if you look at commercial dish washers they either add disinfectant
to the washing process or wash at a high temperature. Personally I would
say unless you have had something like raw chicken on the items to wash
then the washing process really ought to be 'good enough'. After all hand
washing takes place in a bowl full of lukewarm water (it soon cools to an
ideal temperature for bugs to breed in). Hand washing also involves a bug
infested dishcloth or sponge.

and is often insanitary

And the immune system handles that fine.