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Certain chemicals used in the mats and coils can adversely affect male and female fertility. The blotting paper used in the preparation of the mats contains dioxin, a proven carcinogen. Traces of dioxin are released from the mat during the heating process. When allethrin was produced in America about 40 years ago its use was intended for outdoor purposes only. But the Indian scene is very different. Here many persons stay in a single room. Use of allethrin based coils and mats in such cramped indoor settings makes it even more dangerous.
The proper and effective use of mosquito coils and mats involves uniform heating at a temperature of about 800 C. The vapours from heated coils and mats keep the mosquitoes and other insects out. The mats contain a nerve poison, which affects the nervous system of insects and their host finding ability is impaired. This can cause allergy in some people.
You can certainly keep mosquitoes out the safe way:
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2008, Chennai Interactive
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A group of leading medical practitioners recently issued a warning that Allethrin (a synthetic pyrethroid) based mosquito coils and mats can cause health hazards and their use should be avoided or discouraged. Research done in western countries has also established that prolonged use of mats is harmful for humans. It can lead to corneal damage, shortness of breath, asthma and even damage liver in the long run.
A well-known malaria specialist has said that safety issues related to prolonged usage of Allethrin, which is a potent insecticide, are yet to be studied completely for its side effects on humans in the Indian situation. Studies in China too have proved that long-term exposure can lead to adverse effects, especially in lightweight individuals particularly children. Infants exposed to mosquito repellent mats have been known to suffer from convulsions.
Some time people use liquid drops of these repellents to reuse the mats, which is a wrong practice. The mats are made of thick blotting paper that loses its ability to uniformly absorb and release allethrin after one use. A mosquito mat contains only 1 percent to 1.2 percent of allethrin by weight, which on slow evaporation gets dispersed in the air. The mat manufacturers recommend closure of all windows and doors for about an hour, after putting the mat burner on for best results. But they don't recommend opening of the windows and doors after that duration.
