The benzoylurea chitin synthesis inhibitor dißubenzuron was evaluated as a rodent feed-through for the control of immature stages of Phlebotomus papatasi Scopoli (Diptera: Psychodidae). The development and survival of second instars of P. papatasi larvae that were fed feces from Syrian hamsters, Mesocricetus auratus, that had been fed a diet containing 0, 8.97, 89.7, or 897 ppm dißubenzuron was evaluated. No pupation or adult emergence occurred when larvae were fed feces from hamsters that were

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... fed diets containing dißubenzuron. The mortality of sand ßies fed feces from treated hamsters was coincident with pupation of the controls, suggesting a speciÞc effect on the larval-to-pupal molt. The results of this study suggest that a control strategy using rodent baits containing dißubenzuron for phlebotomine sand ßies and zoonotic cutaneous leishmaniasis may be possible.