Which type of applicator uses air to deliver insecticide to the target?

The type of applicator that uses air to deliver insecticide to the target is the air blast sprayer. Air blast sprayers are specifically designed to use high-velocity air to atomize and distribute pesticides over a wide area. This method allows for better penetration of the pesticide into dense foliage or areas where pests might be hiding, making it particularly effective for applying insecticides in agricultural settings or for mosquito control.

In contrast, ground sprayers typically rely on hydraulic pressure to deliver the spray solution, while granular spreaders apply solid substances rather than liquids and do not utilize air for delivery. Hydraulic sprayers also focus on liquid application but without the air assistance that characterizes air blast sprayers. Therefore, identifying the method of application involving air effectively narrows it down to the air blast sprayer.