evaluated for larvicidal activity against Ae. aegypti early fourth instar larvae and their LC and LC values ranged from 63.7 to 162.9 ppm with Ocimum lamiifolium and Chenopodium ambrosioides exhibiting highest larvicidal effects with LC of 47.3 and LC 97.9 ppm [30]. Essential oil from Mentha piperita showed larvicidal action against Ae. aegypti with LC and LC values of 111.9 and 395.1ppm after 24 hour exposure [31]. Govindarajan [32] studied the larvicidal activity of essential oils from four
plants and the highest activity was observed in essential
oil from Zingiber officinale against Cx. tritaeniorhynchus
and An. subpictus with LC and LC values as 98.83, 50 90
57.98 and 186.55, 104.23 ppm, respectively.