How they work (they need electricity, I think they use like 20w):
* "Airborne particles are charged by the ions causing them to cluster and be caught in filters"
* "Bacteria and viruses bond with oxygen ions and are inactivated"
* "Many odorous gases and aerosols oxidize with oxygen ions and are neutralized"
* "Oxygen ions cause a reaction with VOCs breaking down their molecular structure"
"The negative ions contain an extra electron while the positive ions are missing an electron resulting in an unstable condition. In an effort to restabilize, these bipolar ions seek out atoms and molecules in the air to trade electrons with, effectively neutralizing particulate matter, bacteria and virus cells, odorous gases and aerosols, and VOCs."
https://www.plasma-air.com/how-it-works (same technology as WITT as far as I understand)