I am not an expert to know if it does what it promises. However, once a month I go through all the rooms of the house, always following the manufacturer's instructions. Its operation is simple through a remote control.
You press the on button for 10 seconds to give the command to turn on, and before it turns on, you give the command for another 10 seconds for how long you want it to run.
Be careful not to have any person or pet inside the area where it will operate.
Personally, I leave a window slightly open because when it starts destroying the ozone, it smells strange.
It turns off by itself when the operating time is over. But after an hour, visit the area. Open the window or door and leave it for another hour until it completely airs out.
This is how the sterilization of the area is done.