Before starting the treatment cycle, ensure that the door is closed and all other cabinets, closets and desks are open. It’s also a good idea to keep a window cracked as well, to allow a circulation of fresh air for the duration of the cycle. It’s best to run the ozone generator during the night, when no one is around, so the unit can run its course smoothly without being disrupted. You may have to do this a few times a month, depending on how messy the area tends to get, or just a couple of times per year.
Once the cycle has finished, inspect the room to figure out whether or not the odor still lingers. If that’s the case, repeat the cycle over the next few nights, until it’s gone for good.