I purchased a Far UVC light direct from UVWave Tek and have been using it in my counseling office since October. I also purchased a personal sized Far UVC light that I take with me if I have to do something in someone else’s office. I have been exposed to COVID twice now, once in my own office and once in a one-on-one meeting with another therapist. I escaped infection both times, as far as I know (I did test multiple times over the next 10 days but we know RAT tests aren’t always valid).