germs
humm
Well do you want to kill them, or do you want to get rid of them? There is a difference!
It seems to me there are a few methods that are being discussed to achieve the same desired results!
Extreme heat ( sometimes heat and hold ) Disinfectants (chemical) Soap and water, I'll call that the (slippery method)
Plain old soap and water, I can tell you, germs are not going to like very much! The alkalinity of the soap, and the fact that the surface tension has been reduced so greatly, that it's extremely difficult for the germ, or microbe to hang on!! Therefor "sliding" down the drain! Screaming "NO NO"
The kitchen sponge is a little different, in that it is not a smooth surface, and a germ could hang on for dear life! Wetting the sponge, and putting in the microwave for 2 min should do the trick.
Plates, glassware, flatware, kitchen countertops, are pretty smooth surfaces for the most part. Same for bathroom surfaces.
(there is is reason for that!) The smooth surface and the use of hot soap and water is generally enough to remove, and rinse away the bad guys!
Now if you turn around a dry with a dirty towel, or wipe the floor, ect then you caused a cross contamination situation to occur! Most people
( that have enough sense to pour piss out of a boot) would not do that! Or wash the dishes with the same water that was used to scrub the kitchen floor! (whoever did that needed to be slapped there her mother!)
The dishwasher is not the all end all!
If someone dose not wash there hands before taking the clean stuff out...or reaches into the cupboard, where the clean dishes are with dirty hands, or into the sliver ware drawer, or sets their purse on ect ect ect
Most communicable diseases are caused from cross contamination, not because you don't have a dishwasher!
Common sense, hand washing, sanitizing sponges, dishclothes, and dishtowels, will serve well in the fight!