If you need to control output or for permanent installation like in casinos or skyscraper trash compactor rooms look at Sonozaire units, if you need constant high output and mobility, then look at International Ozone TZ series units.
Bone View Ozone Generator in my opinion is the best of all that I have ever tried. Other models that I took earlier worked much worse. I believe that its compactness allows it to be used by a large number of people. I bought it here and now i am hunting with ozone generators in the stand. It is great for hunting and does its job completely. My wife doesn't smoke and doesn't like me to smoke, and I smoke quite a lot. This generator allows me to get rid of the smell of cigarettes on my things. My wife now thinks I quit Smoking. This is another plus for me personally, but I think that many people will support me here.