Do Not Destroy Your Help

If a good friend came to clean up your home, would you knock him down or roll up your sleeves to join in cleaning? :)

We know that every tiny surface of our body, inside and out, is covered with slightly slimy friendly bacteria. When there is too much crap in whatever place, the friendly bacteria will start eating it, growing in numbers. As soon as the job is done, the bacteria will decrease in numbers.