Using traditional mosquito-repellent incense can really repel mosquitoes. Is this mosquito-repellent incense harmful to human body?

Listening to mosquitoes buzzing in my ears, I have a deep understanding of this. I'm upset and want to shoot all mosquitoes to death. At this time, some people will say, don't you use mosquito-repellent incense or something

Not that I don't want to use it, but that I dare not use it. I'm more afraid of mosquito-repellent incense and other things hurting my health than letting mosquitoes suck my blood! Then, which is less harmful to human body, electric mosquito-repellent incense, mosquito repellent and disc mosquito-repellent incense?

Comparison of advantages and disadvantages of common mosquito-repellent incense in the market

1. Disc mosquito-repellent incense

Ingredients: pyrethroid, mixed ethylene glycol, organic filler, adhesive, dye and other additives.

Principle of action: After the mosquito-repellent incense is ignited, the pyrethroids in the mosquito-repellent incense volatilize with the smoke and spread in the indoor air, paralyzing the nerves of mosquitoes, thus killing mosquitoes.

Advantages and disadvantages analysis: coil incense will produce smoke when burning, and long-term use will damage people's nasal mucosa. Disc mosquito-repellent incense can drive away the chemical components of mosquito-repellent incense by burning, and the smoke produced after burning contains inhalable particles, which may cause certain harm to human body and environment.

Reminder: Be sure to pay attention to ventilation and don't use mosquito-repellent incense in a closed room. If you feel dizzy and sore throat when using mosquito-repellent incense, it is not caused by pyrethrins, but by solvents (burning solvents must be added to mosquito-repellent incense). At present, kerosene and alcohol are widely used solvents, both of which have stimulating effects on human respiratory tract. In addition, it is best not to put fish tanks in houses with mosquito-repellent incense, because pyrethroids are harmful to fish.

2. Electric mosquito coils

Ingredients: The components of the electric mosquito-repellent incense tablet are pyrethroid, natural pyrethroid, synergist, tetradecane n-alkane and perfume. The composition of electric mosquito-repellent incense liquid is about 2.3% pyrethroid, stabilizer, n-tetradecane solvent and essence.

Principle of action: The mosquito repellent principle of electric mosquito-repellent incense is that pyrethrum is inhaled into mosquito-repellent incense tablets and evaporated after heating to achieve mosquito repellent effect. If you drop a few drops of essential balm, the effect will be better, generally lasting 6~8 hours.

Advantages and disadvantages analysis: Compared with disc mosquito-repellent incense, electric mosquito-repellent incense has the advantages of no open flame, safety and hygiene, and convenient use. However, this mosquito-killing product is not suitable for people with allergies if the mosquito-repellent incense tablet or liquid is not good.

Reminder: When using electric mosquito-repellent incense, you should pay attention to the collocation of tablets and heaters. No method can achieve the goal of completely preventing mosquitoes, and mosquitoes will also develop drug resistance, so you can use different mosquito repellent or mosquito killing products in turn at ordinary times. Want to know more about street emergencies in nanbu county for the first time, please pay attention to the official account of Southern Media WeChat.

3. Aerosol mosquito killer

At present, most aerosol mosquito killers have added essence. Aromatic molecules react with ozone in the air, which will produce harmful substances containing formaldehyde. Some people blindly spray this fragrant smell in the bedroom because of their olfactory hobby, which is very bad for some people with allergies and is easy to induce allergic cough and asthma.

Obviously, mosquito repellent is the most harmful to health, and mosquito-repellent incense is not safe. Electric mosquito-repellent incense is just a better choice.

There are only a few components of mosquito-repellent incense, and the order of toxicity is (from big to small): organophosphorus (trichlorfon/chlorpyrifos/natural enemies of pests)-carbamate (propoxur/mirex)-pyrethroid (cypermethrin/fenpropathrin /ES biothrin).

At the same time, dosage form is also the key. Electric mosquito-repellent incense > burn a plate of incense

The effective components of most 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.

In other words, there is no absolutely safe mosquito-repellent incense ~ and inferior mosquito-repellent incense is more harmful.

How to identify inferior poisonous mosquito-repellent incense?

Identification of toxic mosquito-repellent incense mainly includes the following aspects:

1, look at the appearance from the packaging identification.

The safe mosquito-repellent incense has fine processing, uniform color and strong bending resistance, and the ignition time is about 7-8 hours. If the surface of mosquito-repellent incense is rough, the structure is loose, there are impurities with larger particles (DDT crystal is fine powder), it is easy to break, or it goes out half before the ignition time, so it can be considered as toxic mosquito-repellent incense.

Liquid mosquito-repellent incense should be odorless and the color should be uniform and transparent.

2. smell the fragrance and watch the color.

After lighting Chinese herbal medicine and pyrethrum mosquito-repellent incense, the smoke is not strong, and you can smell a natural fragrance without pungent and dizzy feelings; However, DDT mosquito-repellent incense smells like mothballs after it is opened and ignited, which will make people dizzy after smelling it for a long time.

Liquid mosquito-repellent incense has no peculiar smell.

3, mosquito-repellent incense ash mosquito-repellent incense liquid

The ashes of pyrethrum mosquito-repellent incense are white and gray; The ash of poisonous mosquito-repellent incense is black.

Liquid mosquito-repellent incense will not change color if it is kept for a long time.

Step 4 watch the fire

Light mosquito-repellent incense with matches. Pure pyrethrum mosquito-repellent incense has only yellow flame and bluish-white smoke, while toxic mosquito-repellent incense has green flame and black smoke when burning.

In addition, at present, some regular mosquito-repellent incense manufacturers basically use mosquito-repellent incense anti-counterfeiting labels to distinguish fake and shoddy mosquito-repellent incense, and consumers can check the anti-counterfeiting labels to identify toxic mosquito-repellent incense when purchasing.

A more natural and safer mosquito killing method

1. Eating garlic can effectively repel mosquitoes, because mosquitoes don't like the smell of garlic secreted by human body.

2. Oral vitamin B, excreted by sweat after physiological metabolism, will produce an odor that mosquitoes dare not approach. Take vitamin B 1 ~ 2 tablets orally one hour before going to bed, but don't take them in large quantities for a long time. In addition, dropping a few drops of vitamin B solution in the bath can also prevent mosquitoes.

Wear yellow, patterned and white clothes. In daily life, people are often bitten by mosquitoes, but people around them are indifferent, which is often the case. It turns out that mosquito bites have a lot to do with the color of clothes people wear. If you wear dark blue or brown clothes, you will be more vulnerable to mosquito bites. So you should wear light clothes in summer.

4. skillfully use cool oil and wind oil essence to put a few boxes of uncovered cool oil or wind oil essence in the bedroom. Light mosquito-repellent incense, the smell is choking; Hanging mosquito nets makes the air dull. If you can drop a proper amount of essential balm on the whole mosquito before lighting it, the mosquito will not be choked, the room will be clear and the mosquito repellent effect will be good. If you can sprinkle a few drops of essential balm before entering the mosquito net, you can improve the air condition in the mosquito net and increase the mosquito repellent effect.

5. Install orange bulbs indoors. Because mosquitoes are afraid of orange light, they can produce good mosquito repellent effect.

6. Rub the dried Folium Artemisiae Argyi into a rope, light it and put it indoors. Smoke can repel mosquitoes.

7. Put 35 ml of sugar water or beer on the table or in an empty indoor wine bottle with many mosquitoes. When mosquitoes smell sweet wine, they will inject it into the bottle and be stuck to death by sugar water or beer.