Every few weeks a South Florida mosquito spraying notice goes out. The county posts a map, a truck or a plane runs overnight, and a lot of homeowners in Boca Raton and Fort Lauderdale read that as the problem being handled. The gap between what gets sprayed and what is biting you in your own backyard is wider than most people think, and it is the most common misunderstanding I run into on estimates.
What the county is actually spraying, and for what
Take the most recent large operation in our area. Broward County Mosquito Control ran overnight aerial spraying August 1 through 4, 2026 over portions of Weston, Davie, Sunrise, Southwest Ranches, Pembroke Pines and Miramar, between 2 and 6 a.m. (Source: City of Weston aerial mosquito spraying notice, August 2026). That operation targeted adult saltmarsh mosquitoes migrating out of the Everglades, and the county's own notice is direct about the species: it is an aggressive biter that travels long distances, and it is not known to transmit dengue or Zika (Source: same notice).
The biggest visible spray event in west Broward this season was aimed at a nuisance species, not at the mosquito behind the dengue headlines.
Municipal programs are often calendar driven rather than outbreak driven. Palm Beach Gardens runs city-wide spraying four times a year, in the weeks before Memorial Day, the Fourth of July, Labor Day and Halloween (Source: City of Palm Beach Gardens Mosquito Spray Program, pbgfl.gov, retrieved Sept 21, 2026). Useful service. Not a response to conditions in your yard.
What adulticide does and does not do
Wide-area spraying uses ultra low volume equipment that breaks the product into tiny droplets that kill flying mosquitoes on contact. Those products are non-persistent by design. They break down quickly and leave no residual, and adulticiding alone does not control a population, because the larvae are untouched and quickly replace the adults that were killed (Source: American Mosquito Control Association, mosquito.org, retrieved Sept 21, 2026).
The CDC puts it plainly in its own mosquito control guidance: adulticide spraying is usually the least effective mosquito control technique, and the most effective and economical approach is larval source reduction (Source: CDC mosquito control guidance, retrieved Sept 21, 2026).
So a 3 a.m. pass over six cities knocks down whatever is flying at that hour, in the open, in the spray path. It does nothing to the water in the saucer under your bougainvillea.
The mosquito behind the dengue cases lives in your yard
Aedes aegypti, the species that carries dengue, is a container breeder that thrives in exactly the clutter a South Florida yard produces: saucers, bromeliads, tarps, gutters, toys, boat covers. It bites during the day, and its flight range is short, usually a few hundred meters (Source: California Department of Public Health Aedes aegypti fact sheet, retrieved Sept 21, 2026). The one biting you by the pool at 4 p.m. was almost certainly born on your property or your neighbor's.
That is why a nighttime, wide-area, non-residual application is the wrong tool for it, and why health departments pair spraying with door-to-door inspections.
Where the numbers stand
Florida's arbovirus surveillance report for September 6 to 12, 2026 counts 152 locally acquired dengue cases statewide, with Hillsborough at 134 and Miami-Dade at 7. Palm Beach and Orange are on the county list. Broward is not on it at all (Source: Florida Arbovirus Surveillance Week 36, Sept 6-12, 2026). DOH-Miami-Dade has had a mosquito-borne illness alert in place since August 3 (Source: Florida Department of Health in Miami-Dade County, Aug 3, 2026). Orange County moved from a September 2 advisory up to a full alert on September 18 after two more locally acquired cases in Apopka (Source: WFTV, Sept 18, 2026).
What actually covers your property
Three things, in order of value.
Walk the yard once a week and dump every container. Free, highest return on the list, and the same conclusion the CDC reaches. Check gutters. Nobody checks gutters.
Treat the breeding containers you cannot dump. In2Care style stations use a natural based biological larvicide that works on the container and on the mosquitoes that visit it. That is the part of our service that is natural based.
Then the barrier. A control barrier application kills adult mosquitoes on the foliage where they rest and holds for roughly 10 to 17 days between services. That product kills. It is not natural, it is applied label-directed, and it contains no neonicotinoids. I would rather be precise about that than sell you on a word.
County spraying, done well, reduces the regional load. Your yard is a separate job. If you want someone to walk it with you, give us a call or fill out the form on our site.
Sources are cited inline. Questions about your own property? Call 561-443-3333 or request a free quote.