In Thailand, water-storage jars, barrels, drums, pails, and tanks constitute vast developmentalsites for Aedes aegypti in urban, semiurban, and rural areas. Earthen waterjars, cementjars, and concreie tanksconstitute the greatest proportion of artificial containers where Ae. aegypti breed. This species is a major vectorof the causal agents of dengue and dengue hemorrhagic fever, and vector control by larviciding is one of themain approaches to disease control. At present, temephos...