The invention relates to the technical field of mosquito and fly prevention and control, in particular to a formula and a process of an S-
methoprene-containing fly attractant for a
pasture. The insecticidal composition is prepared from the following raw materials: S-
methoprene raw
medicine, lure, a saccharide lure base, a
protein source,
ascorbic acid,
titanium dioxide, a thickening suspending agent, a
preservative, deionized water and dye. According to the invention, through step-by-step feeding and high-speed shearing, a stable viscous suspension
system is constructed, photosensitive and volatile
active components are effectively protected, and the lasting time of the
drug effect is prolonged; the final product is pasty or gelatinous, so that targeted spot application in a
pasture environment is facilitated, and environmental
pollution is reduced. According to the technology, sex
pheromone attraction, food source attraction and an
insect growth regulator killing mechanism are successfully combined, an efficient, lasting and environment-friendly mosquito and fly prevention and control solution is provided, and the problems of
drug resistance,
drug residues and environmental
pollution in traditional
chemical agent prevention and control are effectively solved.