How to create heavy atmospheric fog effect for Halloween

Check out this instructional video that shows how to build a trash can style fog chiller used on Halloween for a heavy, lingering atmospheric fog effect.

The idea is that fog has to travel through 16 ft of cold aluminum before exiting the chiller. This results in dense, lingering fog. Lawn & leaf bag are attached to the outlet to slow down the velocity and create back pressure while spreading the fog out onto the grass. The fog rises more but is still slow, dense, heavy and lingers.

This show & tell video was taken immediately following the Halloween Yard Haunt prior to dismantling. The unscripted prop descriptions are as complete as time would allow.

Hopefully, this video is informative for first time yard haunters.