Editing Fog machine (section)

==Uses==
[[Image:Smoke Machine.jpg|thumb|right|A heavy duty smoke machine feeding smoke into a blower to generate fog effects for open air [[Filming location|location filming]].]]
The versatility of fog machines make them appropriate for a wide variety of applications:
Fog readily assists in creating a specific mood or feeling for a theatrical moment, and is often used in plays, such as ''[[Dracula]]'', ''[[A Christmas Carol]]'' and ''[[Macbeth]]''. Fog machines are also frequently used in [[Halloween]] displays such as [[haunted house]]s or forests. Because of greater availability and reductions in prices between 2003 and 2005, fog machines have become widely used for domestic Halloween presentations.
Fog machines are also useful for industrial applications including visualizing the flow of air, such highlighting drag over a surface in a [[wind tunnel]] or testing for leaks or filter effectiveness in air conditioning installations.
Emergency and military services also use fog machines in their training regimens.
Because of the [[Reflection (physics)|reflective]] and [[refraction|refractive]] qualities of the smoke created by fog machines, they are often used in [[nightclub]]s and other entertainment venues to enhance the effects of [[Stage lighting|lighting]] and [[laser]] arrangements, although they are being superseded by [[haze machine]]s (see also [[light beam]]).
Several companies in Europe and Canada have developed rapid deployment fog machines for use as intrusion and hold-up security systems, intended to disorient an intruder by filling a room with fog when triggered by a panic button or other security device. These [[security smoke]] devices can produce between {{Convert|300 and 1,000|m3|sp=us}} of smoke in 30 seconds and have been utilized in a wide variety of industries, including buildings requiring a high level of security, such as banks and jewelers, but also warehouses, offices, retail premises and in cash-handling chains. Concerns have been raised, that these devices may cause criminals to panic, causing them to become violent to customers or staff,<ref name="BBC">{{Cite news|url=http://news.bbc.co.uk/1/hi/magazine/8089678.stm|title=What is a fogging device? |date=8 June 2009|publisher=BBC News|access-date=2009-07-02}}</ref> however security smoke now has its own European Standard EN-8 which specifically states that it must not be installed in such a way as to create a mantrap.<ref>[http://www.gms-uk.co.uk/prosecute/Weekly Folders/prose-07-09/News-Bsiasmoke.htm BIA Welcomes new European Standard]{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}</ref>

===Industrial uses===
{{See also|Smoke testing (disambiguation)}}
Ultra Low Volume (ULV) fogging is used by pest control industry and cleaning companies. ULV refers to the droplet size (between {{Convert|20-30|μm|sp=us}}) generated by these fog machines. This fine droplet size is known<ref name=":0">{{Cite web|url=http://pesthqmackay.com.au/fog-machine-droplet-size/|title=Fog Machines: The Optimal Pest Control Droplet Size|website=Mackay Pest Control|access-date=2016-09-22}}</ref> as the optimum size for pest control. Traditional thermal fog machine technology has difficulty reaching crawling pests such as roaches, flea, and rodents due to the droplet size being too fine (less than {{Convert|10|μm|sp=us}}). It is often found that small droplets are blocked by the "air-curtain" of insects and rodents.{{Citation needed|date=September 2010}}<ref name=":0" /> Cold Fogging, in contrast, is heavy enough to penetrate these "air-curtains" as well as light enough to be evenly distributed within a room.