In summer, to prepare for the invasion of mosquitoes, mosquito repellent products are indispensable. The wings of mosquitoes are also unpleasant and can cause various diseases. There are many styles of electronic mosquito coils on the market, but the standard one is the green whirlpool mosquito coil. It can be said to be a "summer tradition". However, the familiar mosquito coil has some mysterious places, such as the reason for its swirl shape. The mosquito coil manufacturer has revealed five mysteries hidden in this mosquito coil.
Secret 1: Why is it spiral?
Why is the mosquito coil spiral and green? "In 1890, mosquito coils were invented into sticks, inspired by incense sticks on Buddhist altars, but each stick only lasts about 40 minutes. Because it is thin, the insecticidal effect is weak, and it breaks during transportation. It also has the disadvantage of being cheap. Therefore, after extensive research and design, the product is designed to make the product durable and effective for long-term use. According to the inventor of this style of mosquito coil, it was turned into a "snake-wrapped tongue" The spiral shape keeps burning in the process of "pan". The green design is one of the reasons that people think of the color of grass leaves, which can give people a cool feeling. In the past, because the mosquito coil was handmade, the right hand Winding is the mainstream because it is easy to process. Since around 1957, machine punching has been used. Most of the company's products have inherited the previous style and made right-hand winding.
Secret 2: mosquito coils use pyrethrin insecticidal ingredient?
I heard that current mosquito coils do not use pyrethrin. The original insecticidal ingredient of mosquito coils is pyrethrin, a natural killer found in pyrethrum (Pyrethrum japonicum) found in the Republic of Serbia However, due to the increase in food production, the planting of pyrethrum decreased significantly. There was also pyrethroid, a synthetic pyrethroid compound similar to the natural insecticidal ingredient pyrethroid. Since then,The active ingredients of household insecticides began to use this chemically synthesized pyrethroid drug. It has no effect on the human body. Even if it enters the body, it will be quickly decomposed, detoxified, and excreted from the body.
Secret 3: How to place and use to improve efficiency?
Where should the mosquito coils be placed? Basically it should be placed against the wind. Place it diagonally in more than two places, so that the wind direction can be changed, and the effect will be better. In fact, in various anti-mosquito products, the use time is the same. Mosquito coils still have the best effect and durability. The active ingredient is 6-8mm from the tip, evaporates at a temperature of about 200°C, and floats in the air for a long time. The ingredients can reach narrow gaps, such as the back tongue and corners of the room, to get rid of lurking mosquitoes.
Tip 4: How long can it burn in one hour?
How long can mosquito coils last? A roll of normal size is 75 cm in length. Burning at 10 cm for about 1 hour, so the effect lasts for about 7.5 hours, while the large size lasts for about 12 hours. The mosquito coils in the cross section (combustion part) burn very slowly because there are few gaps and there is not much air (oxygen) inside.
Tip 5: How to effectively extinguish mosquito coils?
When the mosquito coil is not used up, many people will break the burned part, but if you are worried about being burned when you fold it, you can use a straw or other tools to drop a drop of water on the mosquito coil. After about a day, it dries and can be used again.
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