• Nkwoada Amarachi
• Nwoko Christopher
• Igbomezie Maryann
• Amakom Chijioke

There is an increasing demand for less toxic repellents from natural products owing the indiscriminate use of noxious synthetic insecticides to control vector-borne diseases. Synergistic repellent activities of Cymbopogon citrates (CC), Allium Sativa (AS), and Palm pressed fiber (PPF) essential oils binary mixture against Musca domestica and Anopheles gambiae was performed. The essential oils were extracted by Soxhlet extraction from three tropical plants and analyzed via phytochemical screening having alkaloids, saponins, tannins, flavonoids, terpenes, and phenols as the main components of the plants. The essential oils blend was prepared as (50/50 % v/v) for double mixtures and (40/40/20 % v/v) for triad mixture. The efficacy levels of the oils can be described for mosquitoes as CC/PPF/AS > CC/AS > PPF/AS > CC/PPF, while the efficacy levels of the oils against houseflies are CC/PPF/AS > CC/AS > CC/PPF > PPF/AS. The CC/PPF/AS blend had the highest repellency time and lowest landing rate, while the protection time for CC/PPF blends against mosquitoes is short, but long against houseflies with low landing rates hence functions as a repellent and deterrent. The CC/AS blend showed low landing rates and high repellency times; and a good repellent for both vectors. PPF/AS blend had high landing rates and good repellency times; hence more of a deterrent than repellent for both vectors. In conclusion, the results indicated that CC/PPF/AS blend was the most promising for repellency and deterrence against mosquitoes and houseflies, and these oils could be used to develop a new formulation to control insects

"Synergistic Repellent Activity of Three Essential Oils Against Mosquitoes and Houseflies", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 3, page no.b84-b89, March-2022, Available :http://www.jetir.org/papers/JETIR2203110.pdf

"Synergistic Repellent Activity of Three Essential Oils Against Mosquitoes and Houseflies", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 3, page no. ppb84-b89, March-2022, Available at : http://www.jetir.org/papers/JETIR2203110.pdf