After detection of resistance to the organophosphate temephos in populations of Aedes aegyptiin Brazil, corncob granule (CG) and water-dispersible granule (WDG) formulations of Bacillus thuringiensisvar. israelensis (Bti) were introduced in routine focal treatments. Larvicidal persistence and the influence ofexposure to sunlight on VectoBac® formulations of Bti were compared...