A look at an official Fog-It fogger.

I wondered if the real thing was a standard smoke machine or if there was a temperature modification. So I bought one so we could look inside.
A significant part of car washing and valeting is based on theatre. From dense multi colour triple-foam and RGB lighting in car washes to dramatic fogging like this.

Not sure what the disinfecting agent in this stuff is, but I see many Benzalkonium Chloride based liquids being sold for thermal fogging. When heated to degradation Benzalkonium Chloride can break down into chlorine and nitrogen oxides. But then, nobody should be in an area while it is being fogged until it has dissipated.

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