The invention describes a biocidal composition of organic bio-actives for controlling insect pests comprising of mixed natural plant extracts comprising of secondary metabolites, variety of metal nanoparticles, potassium phosphate, and Sulphur. The said biocidal composition exhibits synergistic activity for more rapid knockdown of insects and pests. The said biocidal composition has low impact on human health and the environment. The said biocidal composition can be used as a preventive or curative treatment for control of pests including insects, arachnids, and arthropods such as whiteflies, mealy bug, mites, and thrips.
