Mosquito-repellent incense is generally green, black or brown, and the burning time is about 6 to 7 hours. There is also a special kind of combustion time, which can reach 12 hours at the longest.
Extended data
1, electric mosquito-repellent incense
The principle of electric mosquito-repellent incense is that the insecticide (pyrethrin) is inhaled into paper and evaporated by hot air, and the general efficacy can last for 6 ~ 8 hours. The harm of electric mosquito-repellent incense is the same as that of mosquito-repellent incense: the active ingredients of disc, liquid and electric mosquito-repellent incense are all chemical preparations containing insecticidal ingredients, and the only difference is that their carriers are different.
2, electric liquid mosquito-repellent incense
The efficacy is stable. When the switch is turned on and the heater is stateless, the volatile amount of beneficial insecticidal components is always balanced, so the insecticidal effect is stable and mosquitoes can be effectively killed by contact.
Baidu encyclopedia-mosquito repellent incense
Baidu encyclopedia-electric mosquito coil incense
Baidu encyclopedia-electric liquid mosquito-repellent incense