@@@In recent times, repellents and synthetic drugs have been identified as having negative toxicity effects on humans and the environment. Apart from the unfavourable effects on man and livestock caused by these chemicals-based (synthetic) repellents, they are also expensive, non-biodegradable, and no more effective because mosquitoes are getting adapted. With these drawbacks, an eco-friendly plant-based insecticide as a substitute is needed urgently. This paper reviews the extraction and use of essential oil from the leaves of Mentha spicata, Ocimum gratissimum, and Moringa oleifera as mosquito repellent. Carvone, Eugenol, and 9-Octadecenoic acid were discovered to be the most active components in the M. spicata, O. gratissimum, and M. oleifera extracts, respectively, using gas chromatography-mass spectrometry (GC-MS). Highlights In recent times, repellents and synthetic drugs have been identified as having negative toxicity effects on humans and the environment. Apart from the unfavorable effects on man and livestock caused by these chemical-based (synthetic) repellents, they are also expensive, non-biodegradable, and no more effective because mosquitoes are getting adapted. An eco-friendly plant-based insecticide as a substitute is needed urgently. Diseases transmitted by mosquitoes are still a significant reason for the global mortality rate, with over 700 million individuals experiencing such diseases every year. With the proper formulation of other repellent forms using their oils, they can replace non-degradable synthetic mosquito repellents since they are eco-friendly. In general, the mosquitocidal activity and percentage protection of plant extract increase with increasing concentration of the extracts in different formulations. This paper is our original work. We certify that this manuscript has not been published in part or whole elsewhere in any language, and it has not been submitted to any other journal for reviews.
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