settersbrace,
Ozone generators can be expensive. They are often used in hotels and by commercial water and fire damage companies (think Servpro)to remove offensive odors. Ozone, (O3), sometimes called "activated oxygen", contains three atoms of oxygen rather than the two atoms we normally breathe. Ozone is the second most powerful sterilant in the world and can be used to destroy bacteria, viruses and odors. Interestingly ozone occurs quite readily in nature, most often as a result of lightning strikes that occur during thunderstorms. In fact the "fresh, clean, spring rain" smell that we notice after a storm most often results from nature’s creation of ozone. However, we are probably most familiar with ozone from reading about the "ozone layer" that circles the planet above the earth’s atmosphere. Here ozone is created by the sun's ultra-violet rays. This serves to protect us from the ultra-violet radiation. (taken from ozoneapplications.com)
Is it expensive, it can be if you are setting up your own ozone chamber. Does it work, yes. Does it work better than good old fashioned scrubbing and cleaning with alcohol, depends on who you ask. While I do offer ozone treatments for pipes, I find that %99.9 don't need them. Occasionally you will come across an estate pipe that has some ghosting in it that just seems to linger on and on. In that case ozone might be the best way to treat it, but other than that I find there is not that much of a need for it.