During 2008 and 2009, the efficacy of the combination of two Mediterranean fruit fly control techniques, the Sterile Insect Technique (SIT) and a chemosterilant bait station system (Adress®), was tested in three crops: citrus, stone fruit and persimmon. Two thousand sterile males were released per ha and week in the whole trial area (50,000 ha, SIT area). In 3,600 ha, inside of the whole trial area, 24 Adress® traps per ha were hung (SIT+Adress® area). Ten SIT+Adress® plots and 10 SIT plots in each of three different fruit crops were arranged to assess Mediterranean fruit fly population densities and fruit damage throughout the trial period. In order to evaluate the efficacy of each treatment, the male and female populations were each monitored from August 2008 to November 2009 and injured fruit was assessed before harvest. Results showed a significant reduction in the Ceratitis capitata Wiedemann population in plots treated with both techniques vs plots treated only with the SIT. Likewise, a corresponding reduction in the percentage of injured fruit was observed. These data indicate the compatibility of these techniques and suggest the possibility to use Adress® coupled with SIT to reduce C. capitata populations in locations with high population densities, where SIT alone is not sufficiently effective to strongly suppress them. RESUMEN. En este trabajo se ha evaluado la eficiacia resultante de la combinación de dos métodos de control de la mosca del Mediterráneo, la técnica del insecto esteril (TIE) y el sistema quimioesterilizante Adress® basado en estaciones cebo. Estos ensayos se realizaron durante 2008 y 2009 sobre tres cultivos: cítricos, frutales de hueso y caqui. Semanalmente, en las 50.000 ha de ensayo se liberaron 2.000 machos por ha (Area TIE). En una zona de 3.600 ha, situada en el interior del Area TIE, además de los machos estériles se colgaron 24 unidades Adress® (Area TIE+Adress®). Dentro de cada una de las areas descritas se seleccionaron 10 parcelas de cada uno de los cultivos citados. En cada una de las 30 parcelas de cada área se