Mosquito repellent effect on mosquito?

Mosquito-repellent incense is to kill mosquitoes or mosquito? What is the function of mosquito? Or what is the use of the principle to kill or mosquito? If it is driven, the mosquito will produce antibody? Moreover, mosquito-repellent incense toxic to human body?

Active ingredients in modern mosquito-repellent incense is pyrethrum ester, it has the effect of flooding kill mosquitoes. After lit mosquito-repellent incense, as the pyrethrum ester in the mosquito-repellent incense smoke comes out, spread in indoor air, make the mosquito nerve palsy, then fell to the ground and mosquitoes, scattered or escape, so as to drive out the mosquitoes.

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