To combat malaria, many countries have used the insecticide Actellic™ 300CS for indoor residual spraying annually for up to four consecutive years. That runs the risk that malaria-carrying mosquitoes will develop resistance to Actellic. The solution: insecticide rotation. But there have been few options until now. Results from tests in 16 African countries show that SumiShield™ 50WG and Fludora Fusion™ WP-SB, which use the ingredient clothianidin, are effective alternatives. The novel way clothianidin works makes cross-resistance with other insecticides unlikely.