What is the principle of mosquito repellent incense?

1, mosquito-repellent incense is mosquito repellent (generally pyrethroid, that is, pyrethroid insect repellent) and other combustion-supporting substances (such as sawdust, etc. ) are mixed by technical means and then made into mosquito-repellent incense together. Then the pyrethroid mosquito repellent in mosquito-repellent incense is burned in the hands of users and released into the air, and mosquitoes will be poisoned or run away after smelling it. This is also related to the size of the space where mosquito-repellent incense is located. Small space leads to large concentration and better mosquito repellent effect. Large space leads to small concentration, and the mosquito repellent effect is not so good.

2. d-s- bioallethrin and fenpropathrin produced in the combustion process enter the respiratory system of mosquitoes in the form of aerosol, causing them to die. Generally speaking, it is safe for mosquito-repellent incense to burn fully, and carcinogens such as polycyclic aromatic hydrocarbons, carbonyl compounds and benzene will only be produced under the condition of incomplete combustion. Pyrethroid is a pesticide recommended by the World Health Organization to control health pests, and its dosage is strictly regulated in the production process. Before production, the manufacturer will do toxicological experiments to ensure safety before obtaining the registration number of production.