OBJETIVO: evaluar el efecto residual del insecticida Ficam (bendiocarb) 80 WP para el control de Aedes aegypti en el tratamiento perifocal. MÉTODOS: se aplicó a 95 manzanas del área de salud XX Aniversario A, en Santa Clara. Villa Clara. De un total de 5 188 viviendas, 5 070 fueron tratadas con el insecticida a la dosis de 3 g/L de agua. En esta intervención que se efectuó de enero a julio de 2007, se rociaron 7 125 tanques bajos, 1 722 tanques elevados y 9 802 depósitos de otros tipos como tragantes, desagües, cisternas, vertederos, etc.; de igual manera se aplicó el tratamiento al lugar donde se encontraban colocados los tanques (trampa) y áreas periféricas. RESULTADOS: en los 2 meses posteriores al tratamiento, no se encontraron depósitos tratados positivos a larvas de Aedes aegypti y solo 2 en el tercer mes, en el cuarto mes (julio) se observó un aumento de la positividad en los depósitos tratados. CONCLUSIONES: de acuerdo con los resultados el Ficam 80 WP es efectivo en el control del mosquito Aedes aegypti, hasta 3 meses después de su aplicación, porque a partir del cuarto mes comienza a incrementarse la positividad en los depósitos tratados.

OBJECTIVE: To evaluate the residual effect of insecticide Ficam (bendiocarb) 80 WP for the control of Aedes aegypti in the perifocal application. METHODS: this product was applied in 95 blocks located in a health area located in Santa Clara, Villa Clara province. Of a total number of 5 188 dwellings, the insecticide was used in 5 070 of them at a dose of 3 g per litre. During this intervention that was carried out from January to July, 2007, 7 125 water tanks on the floor, 1 722 water tanks placed on the roofs and 9 802 other sites such as drainages, cisterns, outlets, etc were sprayed. Also the product was used where the tanks were placed and in surrounding areas. RESULTS: Two months after the intervention, no treated water tanks were found to be positive to Aedes aegypti larvae; just 2 were positive on the third month and on the fourth month (July), more positive signs of Aedes aegypti presence were detected in treated tanks. CONCLUSIONS: According to the results achieved with Ficam 80 WP, it proved to be effective for the control of Aedes aegypti mosquitoes up to three months after its application, but on the fourth month, greater positivity to Aedes aegypti larvae began to be detected in treated tanks and water containers.