Google is asking for permission to release millions of sterilized mosquitoes in order to fight their disease-spreading counterparts

Through its parent company, Alphabet, Google wants U.S. Environmental Protection Agency approval to release up to 32 million mosquitoes in California and Florida. That might sound apocalyptic, but the request is part of the tech giant’s Debug program to eliminate disease-carrying mosquitoes.

Mosquitoes are the world’s deadliest animal. They spread malaria, dengue fever, West Nile virus and other fatal diseases to millions of people each year. The Debug project wants to tackle this issue by releasing male mosquitoes—which don’t bite or carry disease—to stop these “bad mosquitoes,” like Aedes aegypti.

The “good” bugs will be infected with a naturally occurring bacteria called Wolbachia, which will make them sterile. When one of these males tries to mate with a “bad” female, the eggs won’t hatch. “Over time, there will be fewer and fewer bad mosquitoes,” per the program’s website.

This approach isn’t unique—it’s a known method called the sterile insect technique, and has been used in the United States for more than 60 years.

According to the International Atomic Energy Agency, it’s an environmentally friendly insect pest control method that has been successful in controlling pests like fruit flies, screwworms and moths.

“It’s really a genius technique that has been used to completely eradicate or reduce numbers of serious pests and vectors,” says Chris Grinter, an entomologist at the California Academy of Sciences, to Matthew Brown at SFGate.

Did you know? Mosquitoes have been biting humans for more than one million years

A study published in the journal Scientific Reports in February 2026 found that the Anopheles leucosphyrus group of mosquitoes, in Southeast Asia, evolved a taste for human blood between 1.6 million and 2.9 million years ago, which is much earlier than previously thought.
It’s also not Debug’s first attempt at this. Verily, formerly an Alphabet subsidiary and an early driver behind the project, released millions of sterilized males in California in 2017. The project is also seeing success in Singapore, where it has supported the National Environment Agency’s Project Wolbachia since 2018. In a May 2026 blog post, Debug says Project Wolbachia has “achieved 80-90 percent suppression” of the Aedes aegypti mosquito population and “more than 70 percent reduction in dengue incidents after 6 to 12 months of releases.”

Aedes aegypti, the mosquito targeted by the program, is not native to California or Florida, so no animals rely on it for food. “If Google began to target native mosquito species, then I would be concerned with cascading environmental consequences,” explains Nathan Burkett-Cadena, an ecologist at the University of Florida, to Carla Bleiker at DW.

Still, some experts have raised concerns about the ethical implications of mosquito eradication. “If we were to intentionally set out to cause the extinction of a species, we should think about that,” said Henry Greely, a Stanford law professor and bioethicist, to Jerry Adler at Smithsonian in 2016. “I would want there to be some consideration and reflection, and a social consensus, before we take that step.”

Others, however, believe humans have a responsibility to control their numbers. “The thing is, Aedes aegypti is a species that we have caused to spread,” says Matthew DeGennaro, a neurogeneticist at Florida International University, to DW. “They have followed us around the world. They’re like the cockroaches or rats of the mosquito world. If the climate is right and humans are there, you’ll find Aedes aegypti. So we have an obligation to control them.”

Google’s timeline for the release of the mosquitoes is still unclear. A notice from the federal register shows that the U.S. Environmental Protection Agency is reviewing the company’s request and accepting public comments until June 5.