Mathews K Mathew has come up with a very interesting device- the solar mosquito trapper cum destroyer. This device makes use of the smell from the septic tank to attract the mosquitoes. Once the mosquitoes get trapped inside the device, the heat built up inside the device, as a result of direct sunlight exposure, kills them.
The innovation of the solar mosquito destroyer started with Mathews making an observation during his college days. One day, while he was studying in his room, a mosquito tried to bite him, He lashed out and clapped to kill the mosquito, which was hurt and fell down on the table. After some time, it recovered and flew again and went up to the glass pane fixed on the roof, which was there to let in the light into the room. Mathews concluded that mosquito tried to escape through the glass sheet without knowing the transparent glass nature of glass sheet. Finally, the mosquito was
successful in finding the exit through the gap between roof tile and glass plate and also triggering a thought in Mathew’s mind.
A few months later, one evening, he noticed a large number of mosquitoes swarming around the waste tank constructed near the cow shed and entering through a small gap between the concrete slabs covering the tank. He observed that the mosquitoes found it difficult to survive in dry heat and sought out moist humid zones, as they were ideal for laying eggs and nurturing young mosquitoes.
The solar mosquito trapper and destroyer was the invention by the observation. This product is an outdoor unit, measuring only 25 cm × 20 cm × 25 cm and weighing 1.5 kg. It is installed near septic tanks and traps and kills mosquitoes at the source itself, away from the homes. The product is placed so as to have direct sunlight hitting the dome of the device. The basic components of the device include a polymer based base housing, a transparent dome shaped “solar furnace” with two side wings to lead and collect the dead mosquitoes at the bottom, inner fine mesh layers, a central conical channel with trap hole, adapter system for the biogas inlet tube, control valve to calibrate the bio-gas and bio-gas exhaust tube. Bio-gas from the septic tank flows through the metered gas inlet tube into the base of the housing from one end.
This smell attracts the mosquitoes, which come into the base housing through the circular inlet provided in the base housing. They see the diffused sunlight coming out of the top dome and go upwards to investigate the source. The mosquitoes move up through the trap hole into the conical channel to reach the dome shaped roof area, which is actually the solar furnace. Here the mosquitoes keep exploring the crevices. With the sunlight streaming in, the air gets heated up in this dome and they try to escape downward into the two side wings. The greenhouse effect inside the chamber due to constant heating by sunlight of trapped air dehydrates and finally kills the mosquitoes. The two wings of the reservoir inside the solar furnace are designed to collect the dead mosquitoes and this total unit can be taken out for emptying and cleaning.