If I were to choose between fogging and ozone, right now I would choose ozone. I guess I like the idea of a machine, not me, doing the work. While I think ozone is a good thing, I can't be too sure because there is way too much hype. However, if you do charge for the service I would go with something like $50/hour.
I have also found that Ozone has not been approved by the EPA and can be very harmfull to humans, pets, plants, and art work in concentrated bursts. And the only way to disinfect a space is too exceed the legal limit. The government sems to conclude that, after alot of testing, ozone machines do not do what they are marketed to do.
What I would like to know is if the machines will permanently deoderize a car or room or if it is just temporary. In the latter case I would go with a fogger system. Personally I will buy the ozone machine and follow with the fogger.
Ryan