US firm takes on backyard mosquitoes -- with 600,000 mosquitoes
WASHINGTON - Todd Montgomery pops the lid off a small tube and taps out hundreds of mosquitoes into the backyard of a suburban home outside Washington. He's…
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WASHINGTON - Todd Montgomery pops the lid off a small tube and taps out hundreds of mosquitoes into the backyard of a suburban home outside Washington.
He's not up to mischief: these are males that don't bite, and they carry a gut bacteria called Wolbachia, which means when they mate with uninfected females, the eggs won't hatch.
It is the first initiative of its kind aimed at residential customers in the United States, with 600,000 tiger mosquitoes (Aedes albopictus) set to be released across the region by the end of summer.
"With climate change, we're sitting on a ticking time bomb," the 32-year-old founder of Bee Safe Mosquito Control tells AFP.
Rising temperatures have added more warm, humid days to the calendar in much of the US, lengthening the season in which the disease-carrying insects thrive.
The treatment, sold as "ZAP Males," affects only tiger mosquitoes, which are not native to the region but are vectors for pathogens including dengue -- a growing concern after northern Virginia reported the state's first locally acquired case this week.
A former electrical engineer who moved from his native Kentucky to take a defense job, Montgomery founded the company in 2023 with an eye toward getting pesticide sprays out of suburban yards.
"It really came out of my hobby with native plants and my devotion to the pollinators, seeing the spraying so close to my own home, and wanting to eliminate that risk," says Montgomery, who is pursuing a master's degree in entomology.
It's also a priority for his customers, who are keen to protect families and pets from conventional treatments such as the "forever chemical" bifenthrin, classified as a possible human carcinogen.
"We have a beautiful garden, and I would plant it in May or June, and basically walk away until October," Sandra Marquardt said of the mosquito issue.
The 67-year-old breast cancer survivor, who consults on sustainable textiles and runs a small farmers market, would never have her own property sprayed with pesticides, but admits to having envied neighbours who did.
"It's been bafflingly effective," she said of the Wolbachia intervention. She can now dine on her deck with her husband and garden without being "terrorised" by bloodsuckers.
Twenty-five customers have signed up, each receiving 1,500 mosquitoes a week for 16 weeks. Wolbachia occurs naturally in mosquitoes, and scientists found they could exploit it: if the male carries the bacteria but the female does not, or carries a different strain, sterilisation occurs.
Singapore has the largest public sector deployment, called Project Wolbachia which started in 2016 and now releases more than 10 million every week.
A New England Journal of Medicine study found it significantly cut the Aedes aegypti population and reduced dengue risk by more than 70 percent.
In May, Google applied for a permit to release 32 million mosquitoes for a similar project in Florida and California.
Not all of Montgomery's customers have seen i…