How effective is lemon grass extract as a mosquito repellent? 

Lemon grass extract has been found to be effective as a mosquito repellent . Studies have shown that lemon grass oil formulations can reduce the biting rate of mosquitoes and offer protection against mosquito-borne diseases . The effectiveness of lemon grass extract as a mosquito repellent is concentration-dependent, with higher concentrations exhibiting higher impact . Lemon grass extract has also been found to possess adulticidal effects, causing immobilization or paralysis in mosquitoes . Additionally, lemongrass extract can be used as a substitute for chemical insecticides in fogging activities . The use of citral extracted from natural plants, including lemon grass, as a main ingredient in mosquito repellents has been found to have a remarkable mosquito repelling effect with no toxic or side effects . Furthermore, a mosquito repellent containing a Vitex limonifolia extract has also been found to have excellent effects on mosquito repellency .