What size of droplet, in microns, is recommended for effective adult mosquito control while minimizing environmental impact?

The recommended droplet size for effective adult mosquito control while minimizing environmental impact falls within the range of 5 to 27 microns. This size is optimal because droplets in this range are small enough to remain airborne long enough to disperse effectively into the target area while still being large enough to avoid excessive drift. Smaller droplets (below 5 microns) might evaporate too quickly or drift away from the intended area, reducing the effectiveness of the treatment. On the other end of the spectrum, droplets larger than 27 microns can lead to runoff or quickly fall to the ground, which may also limit their efficacy in reaching adult mosquitoes in flight. Thus, the 5 to 27-micron range strikes a balance that maximizes control while reducing potential negative effects on non-target organisms and the environment.