They work very well. I also cycle ozone and use UVC plug ins.
I had been thinking about getting some for quite a while. Just got Germ Guardian in today-for the bathroom and bedroom.
It’s 3 in 1 Hepa, Charcoal, and UV-C light. Figured I’d try it and see. Might get something larger for the family room.
I have a couple of ozone cleaners for my CPAP that can also be used for other things-but not a room.