A mosquito repellent in which the smoke emitted after being ignited can drive away mosquitoes or kill them. Our country has a very long history of lighting mosquito-repellent incense. Traditional mosquito-repellent incense is divided into two types: thread incense and coil incense.
The smoke from burning mosquito coils contains four types of substances that are harmful to the human body, namely ultrafine particles - soot (particulate matter with a diameter less than 2.5 microns), polycyclic aromatic hydrocarbons (PAHs), and carbonyl compounds (such as formaldehyde). and acetaldehyde) and benzene. At the same time, in addition to these four types of obvious harmful substances, mosquito coils also contain a large number of organic fillers, adhesives, dyes and other additives, so that mosquito coils can smolder without flames.
Variety of mosquito coils
Folding disc mosquito coils
Advantages ① The insecticide formula of mosquito coils can be adjusted at will, it is not easy for mosquitoes to adapt, and the effect of repelling and killing mosquitoes is good; ② The insecticide is evenly distributed on the mosquito-repellent coil and heated gradually, so that the insecticide is dispersed evenly, the mosquito-repelling effect is stable, and the KT50 value is consistent; ③ No power supply is required; ④ The price is relatively cheap.
Disadvantages ① The fixed use time cannot be guaranteed; ② The smoke of wooden mosquito-repellent incense contains ingredients that are harmful to health, and the smoke pollutes the space environment and contaminates items; ③ It is ignited by an open flame, and there is a potential risk of fire; ④ When ignited, the mosquito-repellent incense The pesticides inside the strips have no time to evaporate (especially the disc-type mosquito coils produced by traditional techniques), and about 30-40% of the pesticides are decomposed by heat and lose the effect of repelling and killing mosquitoes; ⑤ A large amount of equipment investment is required to build a spacious building. factories and use a large amount of labor; ⑥ consume a large amount of precious wood resources.
Folding electric heating sheet mosquito coil
Advantages ①No smoke, no odor, no ash, no pollution; ②Using PTC heating source, safe and hygienic; ③The product is easy to transport.
Disadvantages ① The effect of repelling and killing mosquitoes is unstable. It is better in the first 4 hours, but after 4 hours, the effectiveness of repelling and killing mosquitoes gradually decreases; ② The insecticide formula cannot be adjusted at will. A single insecticide formula will easily kill mosquitoes. Adaptation; ③ The paper is under fixed heating for a long time, and the decomposition rate of pesticides is high; ④ The paper base after use still has 20-30% pesticide residues, which loses the effect of repelling mosquitoes, causing waste and polluting the environment; ⑤Power consumption is 5w/h.
Folding electric heating liquid mosquito coil
Advantages ① no smoke, no odor, no ash, no pollution; ② safe to use PTC heating source; ③ use time as you like, power is sent when in use and not in use It is very convenient to use when the power is off. One bottle of medicine can be used continuously for about 300 hours (affected by PCT temperature); ④ It can be produced without mechanical equipment.
Disadvantages ① Since the boiling points and vapor pressures of the ingredients in the agent are inconsistent, they cannot evaporate synchronously during heating, causing the mandrel to become clogged. Therefore, the evaporation amount of the agent gradually decreases as the use time increases, and the effectiveness of repelling and killing mosquitoes is reduced. The effectiveness also decreases; ② The pesticide formula cannot be adjusted at will, and mosquitoes are easy to adapt to a single formula; ③ During use, the decomposition rate of insecticides is about 30-35%, and after use, there is 5%-10% on the mandrel. Pesticide residues and these losses greatly reduce the utilization rate of pesticides, causing waste and polluting the environment; ④ Power consumption is 5w/h; ⑤ The solvent is deodorized kerosene, the bottle is difficult to seal and easy to leak, and kerosene is a dangerous product , inconvenient to transport.