Mosquito-borne diseases cause more than one million deaths in the world every year according to the World Health Organization. It is an effective method for mosquito control by killing mosquito larvae living in water before they get a chance to mature. Chlorine dioxide aqueous solution has been proved safe to humans and the environment and can effectively kill mosquito larvae. This study demonstrates a gel continuously kills larvae by releasing encapsulated chlorine dioxide. A range of larvae count samples of stage 3 and 4 instar larvae were used. Then larval mortality was checked in different time intervals with different weighted gel beads. When 1% and 2% of gel have been used, 20% and 30% mortality rates were achieved respectively after 5 days of the experiment. When 5% of gel has been used, 90% mortality rate was achieved after 5 days. It can be observed that ClO2 concentration reaches 2.5g/L within one day of soaking 10% (v/v) gel beads in water. This concentration is sufficient to kill all larvae in the first 3 days of adding gel beads.

Chlorine dioxide gel for mosquito control

ACS Fall 2020 Virtual Meeting

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