Thermal fogging involves heating insecticide solutions to produce dense, visible fog with fine droplets (0.5–10 μm). These droplets stay airborne long enough to contact flying insects mid-air or settle on surfaces. Commonly powered by propane, gas, or electricity, thermal foggers are used for vector control and increasingly for space disinfection.
Using thermal foggers is safe and effective, even in hard-to-reach spaces such as under furniture, carpets, curtains, and ceilings.