How large of an enclosure are you setting up the fogger in? If it's in a terrarium/orchidarium sized setup, you can look into a small unit made by a reptile supply company call ZooMed. It's an ultrasonic fogger system that works pretty darn well for that type of thing. I have one in my home made orchidarium.
Here is a video (not mine, but it shows how it works) of the fogger in action. It's a reliable unit that can be hooked up to Zoo Med's "hygrotherm" humidity/thermostat to precisely control the temperature and humidity of your enclosure automatically.
And here is a pic of the unit
It's priced from $41-$80 depending on the supplier. amazon has the best prices.
This can work for an enclosure in upwards of 200 gallons (I've used it in terrariums for all kinds of reptiles and amphibians in the past and now my orchids)
This is the Hygrotherm unit
Living life one photo at a time.