The aim of cleaning then should be to Meaning Factcheck Usage

Hygiene Quote

The aim of cleaning, then, should be to reduce bacteria numbers — but not to zero. Even harmful bacteria can be good for us when the immune system uses them for training - Giulia Enders
The core message here is that sterility is not the goal. Health is about balance, not annihilation.
More than 95 percent of the world s Meaning Factcheck Usage

Wise advice on hygiene

More than 95 percent of the world’s bacteria are harmless to humans. Many are extremely beneficial. Disinfectants have no place in a normal household. They are appropriate only if a family member is sick or the dog poops on the carpet - Giulia Enders
The core message here is a powerful one: our war on germs is mostly misguided. We're fighting an enemy that, for the most part, doesn't exist, and in the process, we're damaging our own microbial allies.