Tehran University of Medical Sciences Journal of Arthropod-Borne Diseases 2322-1984 6 1 2012 06 15 28 35 EN A Abu Bakar Department of Biomedical Science, Faculty of Allied Health Sciences, University Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia S Sulaiman Department of Biomedical Science, Faculty of Allied Health Sciences, University Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia B Omar Department of Biomedical Science, Faculty of Allied Health Sciences, University Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia R Mat Ali Forest Research Institute Malaysia (FRIM), Kepong, 52100 Selangor, Malaysia 2015 10 03 Background: Melaleuca cajuputi essential oil in aerosol spray was evaluated against the dengue vectors Aedes ae­gypti and Ae. albopictus at low cost housing flats in Section 10, Setapak, Kuala Lumpur, Malaysia. Methods: Essential oil in aerosol viz: 5% and 10% of concentrations were sprayed for 5 seconds each towards hung mos­quitoes in 5 cylindrical net cages. Aerosol weights were recorded before and after spraying to determine dis­charge rates. Knockdown and mortality number were observed and compared to MS standard aerosol which contain 0.07% prallethrin and 0.05% d-phenothrin as positive control and aerosol contain 40% kerosene and 60% LPG was used as negative control. Results: High knockdown and mortality was observed in both species of mosquitoes towards MS standard aerosol. There was a significant difference (P<0.05) of mortality and knockdown between 5% and 10% of essential oil aero­sol and 5% and 10% essential oil between MS standard. For 5% essential oil, mean percentage (%) of knockdown and mortality of Ae. aegypti displayed slightly higher compared to Ae. albopictus. Spraying with 5% M. cajuputi essen­tial oil aerosol indicated a knockdown of Ae. aegypti 5.60±1.18 and mortality of 22.90±4.22 while Ae. albopic­tus showed 4.60±0.89 knockdown and 20.00±2.85 mortality. The 10% essential oil concentration gave 23.60±1.68 knock­down and 48.05±0.37 mortality for Ae. aegypti. Ae. albopictus gave 23.00±3.16 knockdown and 44.20 ± 2.10 mortal­ity respectively. Conclusions: Extracts of essential oils does possessed an adulticidal effects and could be considered and utilized for fu­ture dengue vectors control. https://jad.tums.ac.ir/index.php/jad/article/view/96 https://jad.tums.ac.ir/index.php/jad/article/download/96/94