“…The opportunity of studying the impact of using different insecticide groups on population susceptibility can help understanding its role in resistance development and it may also support the choice of product use to improve vector control effectiveness. tibility Monitoring Program and sampling methodologies are described in Lima et al (2003Lima et al ( , 2006 and Macoris et al (2003). Nine counties from SP were sampled: Araçatuba, Bauru, Barretos, Campinas, Marília, Presidente Prudente, Ribeirão Preto, São José do Rio Preto, and Santos.…”