I find the number very useful when talking about anti-bacterial soaps, anti-biotic abuses, etc. with less educated acquaintances and family members. It is an e

I find the number very useful when talking about anti-bacterial soaps, anti-biotic abuses, etc. with less educated acquaintances and family members. It is an eye opener for many people to find out that you NEED untold billions of bacteria to live a healthy life.