The current paper has elaborated the efficient utilization of non-edible oil seed cakes (NEOC), by-products of the biodiesel
extraction process to develop a herbal and novel mosquitocidal composition against the Aedes aegypti larvae. The
composition consisted of botanical active ingredients, inerts, burning agents and preservatives; where the botanical
active ingredients were karanja (Pongamia glabra) cake powder and jatropha (Jatropha curcas) cake powder, products
left after the extraction of oil from karanja and jatropha seed. The percentage mortality value recorded for the combination
with concentration, karanja cake powder (20%) and jatropha cake powder (20%), 1:1 was 96%. The coil formulations
developed from these biodiesel by-products are of low cost, environmentally friendly and are less toxic than
the synthetic active ingredients