This article explains about the place that bacteria living and how to kill them. Bacteria are tiny colorless cell that cannot be seen with the naked eye. They are found everywhere in the atmosphere, in our water as well as in the soil. Their reproduction process is through division of cells. However, most bacteria are unable to survive a high temperature in water. The reproduction process is also slowed down when it is extremely cold. Dehydration of foodstuffs will also stop process as there is insufficient moisture for the bacteria to grow.