Various methods of microbial control, including physical methods such as heat, radiation, and filtration, and chemical methods such as disinfectants and antiseptics. The text explores different levels of microbial control, including sterilization, disinfection, sanitization, and degerming. It also examines the factors that affect the efficacy of microbial control methods, such as the type of microbe, the concentration of the agent, and the length of exposure. Additionally, the text delves into the importance of microbial control in various settings, such as laboratories, hospitals, and food production facilities.