A Fog Machine can come as a “Dry Ice” machine, whereby the dry ice is heated thus producing a white vapour. The Smoke Machine is a machine that heats up a special fluid which turns into a similar vapor. Both machines can in turn expell onto the stage, what appears to be a white fog or smoke. The fog effect lends mystery, and enhances lighting effects. They are used extensively at concerts where they enhance the visual appearance and atmosphere of the event.