These devices create a thick, visually appealing vapor using a mixture of water and a glycol-based fluid. A specialized heating element vaporizes this mixture, producing a safe, low-lying fog commonly employed in theatrical productions, concerts, and various entertainment settings. For instance, a spooky, atmospheric effect can be achieved for a Halloween party.
The safety profile of these fog generators makes them preferable in environments with people and sensitive electronics. Unlike alternatives employing dry ice or oil-based fluids, the residue generated is minimal and water-soluble, simplifying cleanup and minimizing potential hazards. The development and refinement of these devices stemmed from a need for safer and more controllable atmospheric effects in the entertainment industry, replacing earlier, less environmentally friendly methods. This shift contributed significantly to enhanced safety standards and creative possibilities in stagecraft and event production.