Summer is coming, and many people like to use mosquito-repellent incense to repel mosquitoes. As everyone knows, mosquito-repellent incense also brings harm to you and your family. Relevant experts remind the public to use safe methods that are harmless to the human body as far as possible to avoid the possible harm caused by mosquito-repellent incense. Mosquito coils contain four harmful substances. According to reports, most of the effective components of mosquito-repellent incense (0.2%-0.4%) are pyrethroid insecticides, which are extracted from a pyrethroid insecticide. More than 99% of other substances are organic fillers, adhesives, dyes and other additives, so that mosquito-repellent incense can be smoldered without flame. What most consumers don't know is that the smoke of this mosquito-repellent incense contains four harmful substances, namely ultrafine particles (particles with a diameter less than 2.5 microns), polycyclic aromatic hydrocarbons (PAHs), carbonyl compounds (such as formaldehyde and acetaldehyde) and benzene. If it is serious, it will cause cancer. A plate of mosquito-repellent incense releases ultrafine particles equal to 75- 137 cigarettes, which can enter and stay in the lungs. So it may cause asthma in the short term and cancer in the long term. According to experts, the pollutants released by mosquito-repellent incense may have a strong poisoning reaction to the human body, which will aggravate asthma (causing shortness of breath and chest diseases) into acute poisoning, leading to dyspnea, headache, eye pain, suffocation, itching, bronchitis, cold and cough, nausea, sore throat and earache. What's more, those particles and gases will be inhaled into the lung bottom, which may cause cancer. Six safe mosquito repellent methods are recommended. When repelling mosquitoes in summer, it is best to adopt the following six safe and natural mosquito repellent methods. ■ When resting, it is best to isolate mosquitoes with mosquito nets or screen windows, because mosquito nets can not only avoid mosquitoes and wind, but also absorb falling dust and filter the air, which is especially suitable for children, while screen windows can let fresh air into the room and harmful smoke out. ■ Use mosquito-repellent incense, pesticides, etc. In order to repel mosquitoes. It is best to choose indoors when no one is around to prevent poisoning. ■ You can put a few boxes of uncovered cool oil and essential oil in the bedroom, or put one or two pots of blooming cordate telosma, jasmine, Milan, mint or rose, and mosquitoes will avoid them because they can't stand their smell. ■ Eating garlic raw and taking vitamin B orally will be excreted from sweat after physiological metabolism, and it will also produce an odor that mosquitoes dare not approach. ■ It can clean up places where mosquitoes breed. Generally speaking, still water and blocked sinks are places where mosquitoes breed. Mosquitoes will lay eggs in still water and soon hatch into larvae. Therefore, clearing the stagnant water in front of and behind the house can effectively prevent mosquito breeding. ■ It is best to use mosquito-killing products such as "electric mosquito swatter" which is safe and has no toxic side effects to avoid mosquito-repellent incense poisoning. If mosquito-repellent incense, insecticide and insect repellent are used, low-toxic products should be used as far as possible to minimize the harm. The mosquito-repellent incense was ordered as "Six Don 'ts" 1. Do not use inferior mosquito-repellent incense. When selecting mosquito-repellent incense, first smell whether there are pesticides such as DDT and bhc, and don't use mosquito-repellent incense if it smells of pesticides. Don't use some mosquito-repellent incense that has no registered trademark, is of poor quality or is genuine but moldy, so as not to endanger health. 2. Don't use the same brand of mosquito-repellent incense for a long time. The same brand of mosquito-repellent incense has the same composition and smell. If used alone for a long time, mosquitoes will develop resistance to it, reducing the mosquito repellent effect of mosquito-repellent incense. Frequent use of various brands of mosquito-repellent incense can improve the mosquito-killing effect. 3. Don't use mosquito-repellent incense excessively. All kinds of smog will stimulate people's respiratory system, so people should not inhale too much. Therefore, don't use too much mosquito-repellent incense. Generally, it is enough to order a room of more than ten square meters. 4. Don't sleep with mosquito coils. Mosquito-repellent incense will increase the indoor concentration of carbon monoxide during burning, and in order to improve the effectiveness of mosquito-repellent incense, doors and windows are often closed when lighting mosquito-repellent incense, which will affect the cleanliness of the air. So it is best not to sleep with mosquito-repellent incense. 5. Don't turn on the fan to light mosquito-repellent incense. Mosquito-repellent incense can repel mosquitoes, mainly because its smoke has mosquito repellent and insecticidal effects. If you turn on the fan to light mosquito repellent incense, the smoke will evaporate with the wind, which will affect the mosquito repellent effect. 6. Don't neglect the time to light mosquito-repellent incense. It is observed that common house mosquitoes generally mate in groups near the eaves corridor at around 5: 30 in the morning and around 7: 00 in the evening. At this time, more female mosquitoes will fly indoors. According to this activity law of mosquitoes, lighting mosquito-repellent incense near dark is the best way to repel mosquitoes.

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