Fog machine
"There's nothing like a layer of fog floating ominously through the night air to really add a scare to your Halloween festivities! Fog has that foreboding look to it, things could be slithering around in the fog unseen, adding the element of the unknown for your trick or treaters. "
- www.GotFog.com
A fog machine is a device, used primarily in theatrical environments, which converts a water-based fluid into a dense smoke. This generated smoke is perfectly breathable, meaning that, in most cases, it is safe for individuals with breathing complications.
Fog machines are used many times to add erie effects to the stage in such plays like 'Dracula,' 'A Christmas Carol,' and 'Macbeth.' Such machines are frequently used in halloween displays such as haunted houses or forests. Because of recent (2003-2005) price changes and avalability, fog machines can be seen on the doorsteps of everyday houses during the season of halloween.
External Links
www.gotfog.com
Colchester Theatre Company - Official Website