Among 18 experimental skin repellent compounds tested at five concentrations in the laboratoryas oviposition deterrents against Aedes albopictus, 12 compounds showed significant activity, with medianeffective dose values ranginlg from 0.005 to 0.052%. The test compounds also were evaluated in the laboratoryas larvicides against laboratory-reared 4th instars of Aedes aegypti, Anopheles quadrimaculatus, and Culexquinquefasciatus with the same concentrations employed for the oviposition deterrency tests against Ae. albopictus. Larval mortality data at 24 and 48h after treaiment indicated that 12 testrepellents caused larval mortalitiesin the range of 67 to 100% against An. quadrimaculatus, 10 compounds induced 55-100% larval mortalities ofAe. aegypti, whereas larval niortality caused by 9 compounds ranged from 74 to 100% against Cx. quinquefasciatus.These mortality data did not fit the linear model of the statistical analysis. However, multiway analysisof variance of these data showed that the repellent compounds, concentrations used, species of mosquitoes, andexposure times affect the degree of larval mortalities.