Abstract: The Ae. aegypti mosquito is the main vector in America. There are several control programs, many of which are ineffective, and therefore, new control alternatives need to be developed. Resistance to insecticides is one problem, for which it is necessary to develop new methods of monitoring resistance. Our objective was to test 3 populations resistant to pyrethroids against a formulation composed of imidacloprid and pralethrin to compare resistance between pure and formulated insecticides
