How Liquid vaporizer expels mosquito? Fact File 28


Liquid repellents are now widely used to repel mosquitoes. The Liquidator mosquito repellent has a graphite rod in the middle and the bottle is filled with the repellent. There is a heater coil in the liquidator. The repellent chemical when comes in to contact with the heated rod turns into fume which disables the sensors of the mosquitoes. The fumes produced by the repellent blocks the chemo sensors of mosquitoes so that they cannot identify human beings.

Liquid mosquito repellents contain chemicals such as ,Prallelthrin , Allethrin etc. Of these the most commonly used one is Pralletrhin. Prallethrin is a pyrethroid chemical used as an insecticide. It is an Yellow to amber viscous liquid. d -trans-Prallethrin is a potent contact insecticide which produces a rapid knock-down, with same chemical and physical properties as Prallethrin.d-trans-Allethrin  is also a  powerful repellent used in mosquito coil and liquid.

These chemicals in the form of vapors block the chemo reception and also the respiratory tracts of the mosquitoes and thus they avoid the hostile situation.The chemical repellents used as mosquito repellents are toxic substances. Even though the concentration of the ingredient is in a safe level, this may cause allergic and respiratory problems in some persons. Precautions are recommended by the manufacturers and these include

1. Avoid inhalation and skin contact.

2. Wash contaminated skin & eyes.

3. Destroy empty containers after use.

4. Keep away from food stuff and animal feeds.

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Mosquito Swatter


Definitely, mosquitoes are annoying and it can spread diseases also. The best way to destroy mosquito is electronic killing using Swatter. It eliminates the use of toxic chemicals. The mosquito coils and liquids do not kill mosquito but they repel them only. Mosquitoes will return back when the chemical disappears from the atmosphere. The swatter is commonly called as Mosquito bat and is meant for killing the mosquito and not for repelling. Since each mosquito lays thousands of eggs, destroying a mosquito equals  destroying thousands of mosquitoes.

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Mosquito Swatter


Definitely, mosquitoes are annoying and it can spread diseases also. The best way to destroy mosquito is electronic killing using Swatter. It eliminates the use of toxic chemicals. The mosquito coils and liquids do not kill mosquito but they repel them only. Mosquitoes will return back when the chemical disappears from the atmosphere. The swatter is commonly called as Mosquito bat and is meant for killing the mosquito and not for repelling. Since each mosquito lays thousands of eggs, destroying a mosquito equals  destroying thousands of mosquitoes.

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Phonotaxis in Insects


Phonotaxis is the movement of animals in response to sound vibrations especially the sound vibrations in the ultrasound range. Even though human ear cannot sense ultrasound, many animal species can produce and hear ultrasound. They respond to certain frequencies of sound and show movements which may be Positive Phonotaxis or Negative Phonotaxis. Positive Phonotaxis refers to the movement of animals towards the source of sound waves of particular frequencies and Negative Phonotaxis away from the sound.

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