A mosquito Repellents is a substance that are applied on human skin, clothing or other surfaces that prevent mosquitoes from sitting or crawling on that surface. Wide variety of mosquito Repellents are being used to keep the mosquitoes away and prevent mosquito-borne diseases such as malaria, dengue, chikungunya, yellow fever, Zika virus, and others. Popularly used chemical ingredients in the preparation of mosquito Repellents include diethyl carbonate, ethyl hexane diol, N-diethyl-3-methylbenzamide (DEET), and diethyl phthalate.