How effective is UV sterilization? Does it work for bacteria and viruses? What are the pros and cons? These are questions I hear a lot working in the microbiology field, especially when people think about how dirty their cell phone gets. With more and more UV sterilization products coming on the market, you might be wondering if they are worth trying. So, let's dig in! UV light has been used for sterilization and disinfection as early as the mid-20th century. With advancements in technology, and specifically in the UV bulbs themselves, its reliable long lifespan (thousands-of-hours) and smaller size (e.g.