2 to 3 lines about mosquito coil
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A mosquito coil is used for decreasing the number of mosquito's in an area, as the name suggests.
It sublimates to gas when flamed/ burnt.
The smoke that comes from the coil is the main thing because of which mosquito's fly away. They don't like the smoke basically.
Mosquito coils are made up of pyrethrum powder.
As per wikipedia, pyrethrum was used for centuries as an insecticide in Persia and Europe, being developed into a mosquito coil in the late 1800s by a Japanese business man, Eiichiro Ueyama.
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