Soap advertisers have figured out that you can really make people afraid of threats that are invisible. (Same applies to so-called organic foods.)

The thing to do is to concentrate on what your senses tell you. Some families have bad habits and the result is food poisoning. If family members get bouts of diarrhea, 'flu' when nobody else has the flu, or 'bugs' (as in 'He got a bug from somewhere,) then it's time to research what makes a clean kitchen and do something about it.

We use sponges, but they get rinsed and nuked for one minute frequently. They also go into the dishwasher with the dishes.

The people with the kids would be far better off making sure their children wash their hands after pooping than by spraying the world. But then, supervising the kids takes real time and real interaction, and Clorox is so fast, impersonal, and efficient.