In a rarely heard-of approach to mosquito control, Google is exploring a plan that could involve releasing millions of mosquitoes into the environment instead of trying to eliminate them. The aim is not to increase mosquito numbers but to reduce the spread of diseases carried by them. The proposed rollout would happen gradually over two years, giving researchers time to monitor results and make adjustments if needed.
According to a Yahoo report, the company has approached US federal regulators for permission to release up to 32 million mosquitoes in parts of California and Florida.
“This study shows that it’s not the chemistry of the molecule itself that is toxic” to mosquitoes, but rather how they “interpret this chemical information,” lead study author Claudio Lazzari told AFP.
Google’s Science arm plans to support the project by infecting male mosquitoes with a specific strain of the bacterium Wolbachia pipientis. The company filed an experimental use permit in December 2025, according to the US Federal Register. The approach aims to reduce mosquito populations over time by interfering with reproduction.
When infected males mate with females, the eggs do not hatch, gradually reducing mosquito numbers
Only female mosquitoes bite, so releasing males does not increase biting risk
The plan involves releasing 16 million lab-bred sterilised males in Year 1 and another 16 million in Year 2 across Florida and California
The proposal is currently under review by the US Environmental Protection Agency
The mosquitoes involved in the project have reportedly been treated so they cannot carry disease. The aim is to disrupt breeding patterns and gradually reduce the number of insects capable of spreading harmful pathogens. The technique is not new and has been used as a chemical-free pest control method, including against New World screwworm and Mediterranean fruit fly.
Before any release begins, Google will need approval from US federal authorities, who are expected to review safety and environmental data. If cleared, the project would be monitored over the next two years.
The proposal comes as scientists continue studying mosquito behaviour. With the proposal currently under review, it remains to be seen whether regulators approve what could become one of the most unusual mosquito-control experiments yet.
