Step 7: Fog Effects
So you need a fog machine. Any machine will do the job but some do it better than others. I have used the cheap $20 machines from Walmart and I have a nice American DJ 1200 watt fog storm. I like my fog storm as it produces much more fog at a better rate, but it is also a little more expensive.
The problem with fog is it comes out of the machine hot and wants to rise and fog your neighbors yard rather than yours. So I made a fog chiller which basically pushes the fog through ice before it exits the chiller and cools the temp down helping the fog stay low to the ground and in your yard, unless there is wind. The concept of a chiller is easy and building one is not to hard either. Search fog chillers online and you will find a plethora of choices. I believe mine was called a reverse vortex chiller, that I modified with a drainage tube to disperse the fog over an area vs one source and put in a vent fan to push the fog down the tube.
If you use a chiller, you will loose half of your fog volume to the ice but what is left will look more like the Hollywood scene you wanted in the first place.
I also suggest you get a timer remote on the machine so you are not having to constantly push the button to make fog appear in your yard.
For the fog itself, solution matters. I have tried the walmart brand, Spirit Halloween brand, Sam Ash brand and even Rosco (high end fogger units). What I prefer is Froggys fog. Depending on your application, they have many different kinds of fogs to chose from. I like the swamp juice from Froggys as it is thick and lasts forever. I walked down my street last year and could see the fog in the air in front of homes 9 houses away.
You can also scent the fog to your liking with scents sold from Froggys. I think my current scent is Swampy Marsh but might change that next year.