It kills the larvae of the mosquito "Aedes albopictus". It has been shown to be prevalent in the tiger mosquito Aedes albopictus microflora. The dark blue essential oil kills the larvae of the mosquito "Aedes albopictus". For dengue they include wAllbB and wMelPop with "Aedes aegypti", wMel with "Aedes albopictus". Furthermore, the oils show mosquito larvicidal activity against "Aedes aegypti" and "Aedes albopictus" larvae. "Aedes albopictus" (Asian tiger mosquito). "Aedes albopictus" mosquitoes have been identified in 1,368 counties in 40 U.S states.