Boiling water can not be sterilized, boiling water for boiling, usually lasts about 10 minutes can be sterilized sterilization. At home tableware, utensils, etc., need to clean, put into the container with water submerged, boiling for about 10 minutes, can kill common bacteria. Some special bacteria, such as Bacillus anthracis need to be boiled for 30 minutes, and Bacillus tetanus need 3 hours. The boiling method kills bacteria by heat that causes the proteins of microorganisms to coalesce, destroying nucleic acids, cell walls and cell membranes. When using this method, it is important to pay attention to the material of the sterilized items. Materials that are not resistant to moisture as well as high temperatures are not suitable. In addition, 70% medical alcohol and ultraviolet light can also be used to disinfect.