What do you think about UV disinfection? How it works? Is it effective?

I think that it works good.. Special UV waves have a long-term bactericidal effect. Different bacteria and viruses react differently to ultraviolet light. Some are killed by weak radiation, and some need strong. You can find more information from https://oxytec-ag.com/de/technologie/uv-c/ . I think it will help you to find answers