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Makers of UV sanitizers claim their products can sterilize anything in minutes. Many say that their sanitizers can kill up to 99.99% of germs on whatever object you put into the device's UV radiation. But do the UV sanitizers actually work? Here's the lowdown.
UV stands for ultraviolet, a form of electromagnetic radiation. The most common form of UV radiation is sunlight, which produces the three main types of UV rays: UVA (which is linked to skin aging), UVB (which can cause sunburn), and UVC (which is blocked by the Earth's atmosphere before it can even reach us). It's UVC—the highest-energy UV ray of the three—that's used in UV sanitizers.