UV sterilizers are devices that use ultraviolet (UV) light to kill or inactivate harmful microorganisms, such as bacteria and viruses. They work by emitting UV-C light, which damages the DNA or RNA of these pathogens, preventing them from reproducing and causing infections. This technology is commonly used in various settings, including hospitals, laboratories, and homes. These sterilizers come in different forms, such as handheld devices, wands, and larger units designed for air or water purification. UV sterilizers are effective, chemical-free alternatives for maintaining hygiene and reducing the spread of germs in everyday environments.