Disinfectants, bathroom cleaners, and odor control products are used to deodorize and remove bacteria, mildew, and mold in commercial and industrial facilities. They can have high concentrations of alcohol or they can be chlorine- or phenol-based disinfectants. Toilet cleaners convert calcium carbonate into salts, which dissolve into water and can be easily rinsed away. Disinfectants and sanitizers kill harmful bacterial and are used in hospitals, schools, and food processing plants. Deodorizers and air fresheners kill microorganisms that cause odors and often contain pleasant scents to remove odors.