2, the safest, better effect: electric mosquito coils. The disadvantage is that you may forget to turn it off after using it, resulting in waste. In addition, the low-end electric mosquito incense liquid uses fenpropathrin, and mosquitoes have already had certain drug resistance. Kidhope containing fenvalerate has good safety and effect, but the raw material is Japanese patent, so it must be imported and the price is high.
3, the cheapest: mosquito-repellent incense. The disadvantage is choking, and the dust PM2.5 exceeds the standard, which is not good for the respiratory system. Informal products may also contain banned DDT and other ingredients, and there are also some open flames.
4, the gentlest: electric mosquito coils. All aspects are quite satisfactory, nothing special. Safety is higher than aerosol and mosquito-repellent incense, but not as good as electric mosquito-repellent incense. The content of effective components is lower than that of electric mosquito-repellent incense and the price is higher than that of mosquito-repellent incense.