Until the 1990s, the traps that have offered the best results were hand-crafted, made of wood soaked in a potent and long-lasting insecticide concentrate. Among the various insecticides, the best results are obtained with deltamethrin. These traps have been carried out, mass-trapping for over a decade with about 130,000 plants in Sardinia with results comparable to those obtained with the adulticide treatments using the protein bait. Since the late 1990s, traps are commercially available on an industrial scale (Ecotrap) for the mass trapping of the olive fruit fly. The Ecotrap is triggered by using a form of double attraction: the pheromone of the olive fruit fly and the ammonium bicarbonate, with biocidal action carried out by deltamethrin. Despite the limited series of tests carried out in recent years in some areas of the Mediterranean regions, the results are judged to be positive.