Why does Google want U.S. government approval to release 32 million ‘good’ mosquitoes? Here’s what we know

Aedes aegypti mosquitoes infected with Wolbachia bacteria to block the transmission of dengue are released by a technician from the Federal District's Health Department in a residential area of Brasilia on March 10, 2026.The anti-dengue mosquitoes have been introduced to 15 countries. Google is looking to do the same in California and Florida. Photo by EVARISTO SA /AFP via Getty Images

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Instead of combating computer bugs, Google is taking up a new focus, seeking U.S. government permission to actually release a lot of pesky bugs — mosquitoes.

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The tech company wants to release 32 million of the insects in California and Florida over the next two years as part of an ongoing AI-driven health initiative it calls the Debug Project. The goal is to control mosquito populations and cut down on mosquito-borne diseases such as dengue and Zika.

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The Debug Project plans to do this by breeding and releasing sterile male mosquitoes to reduce populations of disease-carrying species. The project is using a mix of engineering, AI and data systems to solve a large-scale biological problem.

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The U.S. Environmental Protection Agency is reviewing Google’s request to release up to 16 million mosquitoes annually. The EPA will decide whether to approve Google’s request for an experimental-use permit after the public comment period ends on June 5, reports The Guardian.

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“Bad mosquitoes spread disease. Good mosquitoes can stop them,” the Debug Project team says on its website. “Debug is a group of scientists and engineers developing technology to raise and release sterile mosquitoes to eliminate the ones that carry disease. Mosquitoes kill more people than every other animal combined. One species, Aedes aegypti, carries diseases such as dengue, Zika, yellow fever, and chikungunya which make hundreds of millions of people sick every year.”

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The Debug team contends that most of these diseases can’t be effectively combated with vaccines or treatments. Moreover, attacking mosquitoes with pesticides is not sustainable because they become less effective over time and can also be toxic. Meanwhile, since it’s impossible to find all the places where mosquitoes breed, the project team insists: “We need a new approach.”

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The team calls its planned mosquitoes “good bugs.” They are male mosquitoes that have a naturally occurring bacteria called Wolbachia, which renders the carriers unable to have offspring with females.

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Another benefit, says the Debug team, is that these male mosquitoes can’t bite or spread disease. For this type of male-only release, the U.S. EPA acknowledges that male mosquitoes do not bite and show no risk to people, animals, or the environment.

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“Over time, there will be fewer and fewer bad mosquitoes,” according to the Debug Project. “This technique uses a naturally occurring bacteria and uses no chemicals, no toxins and doesn’t involve genetic modification. We look forward to working with communities to show that by releasing enough good bugs Debug can have a real impact on mosquito populations and disease. Eventually, we hope to help millions of people live longer, healthier lives.”

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It may seem odd for Google to be focused on biological rather than computer bugs, but this initiative was initially driven by a former subsidiary of Google’s parent company, Alphabet. Verily (formerly Google Life Sciences) is a tech company focused on AI-driven health. It uses technology and data science to combat diseases and other global health problems, reports The Guardian. But as of December 2024, Google acquired the Debug Project from Verily.