A field trial of bendiocarb (Ficam W) at village scale was carried out in the Mamasani area in southern Iran, from May to October, 1978. Anopheles stephensi is resistant to DDT and dieldrin. Since 1968 this species has been under pressure of malathion house spraying, 50% w. d. p., 2g/m2, 1-2 rounds per year. The village scale trial with bendiocarb was conducted with 1 round of spraying at dosage rate of 400 mg/m2 of a. i. in July in a group of villages. It was concluded that bendiocarb is an effective insecticide against An. stephensi.