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Air sewerage against mosquitoes





I tested this idea out by letting the air extractor from my bathroom run all night long and slightly opening a window from my bedroom. The curtains would ensure that the mosquitoes saw no movement inside. All night long, no air from the inside of my bedroom did spill out of the window, because of the negative pressure. Hence my scent was not present in the outside anywhere close to the window. A fan was slowly blowing inside the bedroom to further dilute any scent that might attract a mosquito towards me.

It worked as planned. I had no bites in the morning, despite having slept with an open window, with an extractor actively sucking in nice fresh air from the outside. It's quite counterintuitive. Outside air, that contains mosquitoes, was actively being sucked inside yet no mosquito entered. They probably even did actively avoid to be sucked in.

Had I slept inside a tent, I would have used a hose with a little battery-run extractor to suck in the air from the most confined part of the tent and convey it a few meters away from the tent. If don't know if the best option is to place the output of the hose downwind or upwind from the tent. Downwind would seem to be the safest yet upwind would have the advantage that a mosquito that comes close to the tent would be attracted away. (Tents do have mosquito nets but they may be damaged and sleeping in a closed and unventilated tent on a warm day can be very uncomfortable.)

The idea would be to equip a whole village or a medical complex with such hoses that would carry away the scents that attract mosquitoes. An air sewerage system. The outside electric lighting would use wavelengths that are not visible for mosquitoes so they would less be attracted by movement. Such an air extraction system would use few energy to run.

The output of the system can be put to use. It can be ducted towards a place dedicated to attract the mosquitoes, together with some lighting effects to fake movement. Their natural predators would gather there to feast on them, which would increase the population of insect predators in the area.



Eric Brasseur  -  Jully 11 2019
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