Most of the time, people trying to use foggers are using the ones designed for making little bird baths/ponds look fogged. Those will work but are not the same variety that are being used for hydroponics. I am fairly certain that only one company is using the proper technology to produce fog for hydroponics as they have a patent on the technology. I have never used one for this reason. I have heard that they are prone to failure and I know they are expensive. They are not BS. If you have the right one, and the correct setup to use it, they will produce better then what most hydro people call aeroponics. In all honesty, fogging is the most true form of Aero but, Aero has taken on a different definition to make it feasible to the average person.