discharged under its own pressure to form a fine aerosol. As with any pesticide
product, read the label thoroughly and follow label instructions.
sprayers (see figure 3-1) are used to apply residual sprays in and around buildings and
for spot treatment of outdoor areas such as latrines. They may also be used to apply
repellents to the clothing of troops in the field and for emergency decontamination of
biological warfare (BW) agents. In operation, the quantity of insecticide used is two-
thirds to three-fourths of the capacity of the tank. Air is pumped into the tank with built-
in pump until the desired pressure is attained. Newer sprayers are equipped with a
pressure gauge; existing sprayers should have a gauge retrofitted (see table 3-1 for
NSN). During use, frequent pumping is required to maintain adequate spraying
pressure. When emulsion sprays are used, the sprayer should be shaken frequently.
These sprayers can be used to apply wettable powder suspensions, but the
Figure 3-1. Two-gallon compressed air sprayer.