The practice caught on quickly, and Mity Mites were soon issued to ARVN units (USMACV 1965) and became common tools for Tunnel Rats (Rottman and Delf 2012). The United States military was publishing on the utility of the fogger in official journals by the next year (US Army 1966).

B/W image in a dirt field. Helmeted soldier on one knee with tank strapped on back. Lifting a board with left hand and holding an exhaust tube from the tank under the board with right hand.

Figure 5: A soldier uses a backpack Mity Mite to fog a tunnel (US Army 1966)

The Army used foggers to pump “air” or “smoke” into tunnels in combination with “riot control agents” during Operation Cedar falls in 1967 (Lehrer 1968). And by 1968’s Battle of Khe Sanh, it was standard practice to use foggers for tunnel excavation as well as mosquito and fly control (Rottman 2006).

B/W image. In a clearing in a densely vegetated area, a small tank with an exhaust pipe blowing fog to the right. The cloud of fog covers much of the right side. Towards the back, 2 people wearing helmets and fatigues with sleeves rolled up stand with hands on hips on either side of the fogger, watching it.

Figure 6: Engineers unpack and test a Mitey-Mite blower (USAES 2003).

In 1969, the US Army Limited War Laboratory published a report on “riot control” methods that included a section on foggers and agents for use in them, naming the General Ordinance Equipment Corporation and Federal Laboratories models that were already in production (Samuels, Egner, and Campbell 1969).