Toxicity and principle: there are three kinds of mosquito repellent ingredients, which contain toxic organophosphate class, the largest organic phosphorus mainly trichlorfon, chlorpyrifos, insect enemy.Toxicity of times is carbamate lipids, such as propoxur, mix out the gateway.The strain is the most common, including methylacetylene chrysanthemum ester, chlorine desflurane chrysanthemum fat, etc., these ingredients most belong to low toxicity pesticides.

Because the mosquito repellent ingredients, harmful gases generated in the smoke of burning is different also, including ultrafine grain (particulate matter less than 2.5 microns in diameter) is the most common, the ultrafine particles can be inhaled, and undermine the human respiratory tract.Some inferior mosquito-repellent incense burning will produce polycyclic aromatic hydrocarbon, carbonyl compounds such as formaldehyde and acetaldehyde and benzene, which belong to the toxic gas, so as long as in the loop of mosquitoes fly near a circle will die life, most mosquito smell will be away from.If lighting in a closed space, also can appear the symptom of poisoning.

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