The invention relates to a new rapid release oral formulation of fipronil or imidacloprid for the effective control of blood-sucking insect populations. Embodiments of the invention relate to their use by incorporation into a feed-through formulation that can be administered orally to host animals such as birds, goats, dogs, and cattle for the rapid effective control of blood sucking insects. The formulation is fast acting and the residue of the chemicals present in the feces serves as a larvacide, effectively controlling newly hatched larvae.
