A formulation and method for insect control is provided in the form of insecticide carrying insects which can be introduced in a population to thereby control the insect population. The formulation may include artificially generated adult insect carriers of a larvicide in which the larvicide has minimal impact on the adult insect and which larvicide affects juvenile survival or interferes with metamorphosis of juvenile insects to adulthood. The insects may be either male or female and may include mosquitoes.