Hand-washing and sanitizing are the best ways to keep germs from entering your body. I don't think anyone is claiming that Winning Colours is going to replace hand soap.
Winning Colours is a STAIN REMOVER first, all-purpose cleaner as a bonus. When most people clean, especially something like stains, they are worried more about aesthetics then germs.
As far as I know, no one is performing open-heart surgery at home, where household cleaners like Winning Colours are used...