The St. Lucie County Mosquito Control District is ramping up inspection and treatment operations ahead of peak mosquito season, targeting known breeding sites before populations surge with the first heavy rains of May and June.
This is the model the state uses for the most aggressive mosquito-driven counties in Florida. Crews survey standing water sources, treat larval habitat with bacterial agents that kill developing mosquitoes before they emerge as biting adults, and monitor surveillance traps to track which species are active where.
The work is methodical and effective for the public land and waterways they are responsible for. Canals. Roadside ditches. Marsh edges. Retention ponds. Storm drains. Public right-of-ways.
What they cannot treat is your property.
Every backyard in Port St. Lucie, Stuart, Fort Pierce, and Palm City is its own separate mosquito breeding operation that falls completely outside the district’s authority. Your gutters, planter saucers, pool equipment storage, low spots after a storm. The tarp on the canoe you have not used since last fall.
Those are yours. And the mosquitoes breeding in them are yours too.
"We have a concrete block home. Termites cannot get into concrete."
Here is the thing most Treasure Coast homeowners do not realize. The district can do excellent work on their side, and it still will not solve your mosquito problem if the breeding habitat on your own property is untreated.
A single untreated container of standing water in your backyard can produce hundreds of mosquitoes a week during rainy season. UF/IFAS integrated pest management research documents that container-breeding mosquito species can complete their full life cycle from egg to biting adult in as few as seven days under warm, humid Florida conditions. Your yard becomes the source, and the mosquitoes biting you are homegrown.
This is why residents in identical neighborhoods can have radically different mosquito experiences. The house with clean gutters, no standing water, and a professional barrier treatment around the vegetation might have an almost tolerable summer. The neighbor two doors down with a neglected birdbath and a sagging pool cover is producing enough mosquitoes to affect the entire street.
The yellow fever mosquito. Small, dark, with white markings. Breeds in containers close to homes. Aggressive daytime biter. CDC identifies Aedes aegypti as the primary vector for dengue, Zika, and chikungunya in the continental United States. This is the species most responsible for recent locally transmitted dengue cases in South Florida.
The Asian tiger mosquito. Similar size to Aedes aegypti, with distinctive white stripes. Also a container breeder, aggressive during the day, and capable of transmitting multiple diseases.
The mosquitoes that transmit West Nile virus. Primarily active at dusk and after dark. Breed in more stagnant water sources like ditches, retention ponds, and slow-moving canals.
The gallinipper. Large, aggressive floodwater mosquito. Not a primary disease vector but a significant quality-of-life pest, especially after heavy rain events.
The Florida Department of Health in Palm Beach County issued a mosquito-borne disease advisory in October 2025 after surveillance detected elevated activity across South Florida. Dengue cases, including locally transmitted infections with no travel history, have been documented in both Palm Beach County and St. Lucie County in recent years.
Dengue is not a theoretical risk anymore in South Florida. It is a documented, repeating pattern.
The Florida Department of Health tracks mosquito-borne disease activity statewide, with dengue, West Nile virus, and Eastern Equine Encephalitis all reported in Florida annually. The severity varies by year and by county, but the baseline risk is not zero and it is not going down.
The Florida Medical Entomology Laboratory at UF/IFAS continues to track mosquito populations and emerging arbovirus risks across the state, and source reduction combined with professional barrier treatment on your own property are direct, measurable ways to reduce your family’s exposure.
Not casually. With intent. Every container that can hold water, every gutter, every planter saucer, every low spot. Empty, drain, repair, or eliminate each one.
Window screens and lanai screens that have tears, gaps, or poor seals are a direct pathway for mosquitoes into your living space. Spring is the time to repair them, not July.
Adult mosquitoes rest in dense shaded vegetation during the day. Dense shrubs pressed against your exterior walls are mosquito hotels. Cutting them back by even a foot or two reduces resting habitat.
This is the single highest-impact step for most Treasure Coast properties. Professional treatments applied to vegetation where adult mosquitoes rest during the day have residual effectiveness measured in weeks, not the hours consumer sprays deliver. Getting the treatment in place before the first heavy rains of rainy season gives it time to work before populations expand.
Single treatments do not carry a Treasure Coast property through a full summer. The homeowners who actually use their yards from June through October are the ones who commit to the ongoing program in April.
1177 Hypoluxo Rd Suite C-31 Lantana, FL 33462 (561) 727-8239
464 NW Peacock Blvd, Unit 106 Port St Lucie, FL 34986 (772) 783-4300
National Today — St. Lucie County Mosquito Control District ramps up inspection and treatment operations ahead of peak season
UF/IFAS EDIS publication ENY-753 — Mosquitoes and their Control: Integrated Pest Management for Mosquito Reduction around Homes and Neighborhoods
Florida Medical Entomology Laboratory at UF/IFAS — ongoing surveillance of mosquito populations and arbovirus risks across Florida
CDC — Aedes aegypti as the primary vector for dengue, Zika, and chikungunya in the continental United States
Florida Department of Health — statewide tracking of dengue, West Nile virus, and Eastern Equine Encephalitis cases
