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All you need to clean your home is a broom, water and a rag. Bacteria is EVERYWHERE, including your skin and inside your mouth no matter what kind of soap or toothpaste you use. Bacteria help strengthen your immune system. The more antibacterial chemicals you use the less healthy you will be.

so whats the conclution what we have to do to safe ourself from bacteria?

There is nothing wrong with bacteria. Most of the bacteria you're exposed to is actually helping you. You NEED bacteria. One of the reasons kids get sicker today and develop ear infections and upper respiratory problems is from being too sanitary and using antibiotics. You should go out of your way to expose yourself to soil outdoors with your bare hands and feet. There is actually bacteria in soil that acts as an antidepressant.