INSECTICIDES THAT CAN IMPROVE THE PERFORMANCE AS DIANS OF FLYING INSECTS, AND LIQUID LOADING APPARATUS.

摘要

A method for killing flying insects comprising spraying in the air in which the insects of fine droplets of an insecticidal composition fly, a unipolar charge imparted to said fine drops of liquid by double layer loading and charge separation during spraying, the unipolar charge being at a level such that said fine drops have a mass to mass ratio of at least ñ 1 x 10-4 C / kg. A spray device that can impart a unipolar charge by double layer loading and charge separation for fine liquid droplets of a composition sprayed therefrom has an insertion-shaped spray head and an actuator, the spray head having a hole through from which the liquid is expelled having an outlet, preferably with a tortuous periphery, which has a ratio of at least 8, where L is the length of the periphery that defines the exit of the hole is already the area of the cross section of the outlet of the hole in mm2 and the apparatus being constructed so that the fine drops are expelled from the spray head with a flow rate of at least 0.5 grams per second and has a mass-to-mass ratio of at least ñ 1 x 10-4 C / kg