The short version
Around Jacksonville, mosquito season runs from about March into November. Start by dumping standing water every week. A barrier spray every few weeks adds steady relief.
- Dump standing water every week.
- Daytime biters are usually tiger mosquitoes.
- Barrier sprays last about three to four weeks.
- Larvicide handles water you can’t drain.
- Use repellent with DEET, picaridin or IR3535.
Homeowners and renters in Jacksonville who want their yard back.
What to look for
In summer heat, eggs become biting adults in about a week. Often the source is a neighbor's yard or a storm drain. Mosquitoes breed in standing water, even a bottle cap's worth.
- 1Egg rafts floating on stagnant water.
- 2Welts on ankles and calves after yardwork.
- 3Standing water in low spots a week after rain.
- 4Corrugated downspout extensions that never drain.
- 5Whining near your ears at night indoors.
- 6A sump pit or crawl space holding water.
Why it’s worth acting soon
- Each new generation is bigger than the last.
- Bites can spread West Nile virus.
- Itchy welts, especially for kids.
- Heartworm risk for dogs.
bite, to get protein for their eggsOnly female mosquitoesUS CDC in standing water, from a bottle cap to a pondMosquitoes breedUS EPA West Nile virus is the most common mosquito-borne disease in the U.S.Mosquito diseasesUS CDC Treatment options and typical costs
Property Inspection for Breeding Sites
$0–$150 (often bundled with a first treatment)
Expect a written or verbal summary of what was found on your Jacksonville property, including problems on the neighbor's side of the fence. You cannot treat next door, but you can plan around it.
- Time
- 30–60 minutes
- Best for
- Every yard; finds where mosquitoes actually breed
Barrier (Residual) Yard Treatment
$75–$200 per visit; $350–$900 per season
Crews should skip blooming plants and vegetable beds when spraying a Jacksonville property to protect bees and food crops. A careful applicator treats resting cover, not the whole yard.
- Time
- 20–45 minutes per visit, repeated every 3–4 weeks
- Best for
- Shaded yards with shrubs, ivy, and dense landscaping
Source Reduction and Larviciding
$75–$150 per visit
Larvicide works on the stage that cannot fly away, which is why crews in Jacksonville treat it as the foundation of any plan. Adult spraying is the follow-up, not the fix.
- Time
- 45–90 minutes
- Best for
- Yards with standing water, clogged gutters, ponds, or drains
Monitoring and Seasonal Plans
$50–$150 per follow-up visit; $350–$900 per season bundled
In Jacksonville, a seasonal plan usually combines a barrier spray every 3–4 weeks with larvicide checks and a final fall visit. Paying per season often beats paying per visit.
- Time
- 15–30 minutes per check; season runs spring through first frost
- Best for
- Anyone who wants the yard usable all summer
Prices are typical published ranges. Ask what’s included before you compare quotes.
Adult mosquitoes spend the day in shady, leafy beds like this one, so that's where a barrier treatment goes.Which mosquitoes bite around Jacksonville.
Asian tiger mosquitoes are common around Jacksonville. They're black-and-white and bite by day. They breed in small containers. Yellow fever mosquitoes live around Jacksonville too. They also bite by day, often near or inside homes. House mosquitoes (Culex) bite from dusk into the night. They breed in storm drains. They're the main West Nile carriers.
Local mosquitoes conditions in Jacksonville.
Jacksonville sits in a humid subtropical climate, and that sets the pace for mosquito activity here: late spring through early fall; year-round in the deep south. In Jacksonville, the area is mostly urban, so mosquitoes pressure can differ from one block to the next depending on how tight the entry points are and how much food, water, or shelter is close by. An inspection in Jacksonville usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Jacksonville's seasonal timing lets you schedule treatment before the busy stretch rather than after it, which usually means faster service and a more accurate quote. A provider who works Jacksonville and Florida every day can point out the specific conditions that matter most here, and getting the scope, price, and follow-up terms in writing makes it easier to compare options.
Mosquitoes that bite indoors usually slip in through gaps around doors or torn window screens.Mosquito season in Jacksonville.
That's a long season. Plan on regular visits. West Nile cases usually peak in late summer.
A year of mosquitoes in Jacksonville.
- Spring: the first wave arrives early in Jacksonville. Start treatments then. - Summer: with highs near 91°F in Jacksonville, check water twice a week. - Fall: numbers stay high. Keep gutters clear of leaves. - Winter: a good time to fix drainage and low spots.
The weekly water walk.
- Gutters: clear leaves so water drains. - Saucers and pots: empty them or add sand. - Toys and buckets: store them upside down. - Tarps and covers: pull them tight so water runs off. - Birdbaths: change the water twice a week. - Pet bowls: refresh daily. - AC drip lines and downspouts: make sure water drains away. - Tree holes: fill them with sand.
Avoiding bites.
- Repellent: DEET, picaridin, IR3535 or oil of lemon eucalyptus. - Clothing: long sleeves and pants help at dusk. - Fans: a patio fan keeps weak-flying mosquitoes away. - Screens: repair holes in window and door screens. - Timing: tiger mosquitoes bite by day; house mosquitoes at dusk.
Low-cost ways to cut mosquitoes.
- Mosquito dunks: Bti tablets kill larvae in rain barrels and ponds. - Mosquito fish: they eat larvae in ornamental ponds. - Pumps and fountains: moving water breeds far fewer mosquitoes. - Trimming: thin out dense shrubs and tall grass. - Lights: yellow bug lights attract fewer insects to the porch.
Mosquito or look-alike?
- Crane flies: look like giant mosquitoes. They don’t bite. - Non-biting midges: swarm near water at dusk. Harmless, just annoying. - No-see-ums: tiny biting gnats near marshes. Screens need a finer mesh. - Mosquitoes: slim, long legs, and a needle-like mouth.
When a bite needs a doctor.
Most bites just itch for a few days. Most people infected with West Nile virus never feel sick. About one in five get a fever, headache or body aches. See a doctor for high fever, stiff neck or confusion. Spreading swelling or an infected-looking bite needs a check too.
Protecting your pets.
Dogs get heartworm from mosquito bites. Cats can too. Ask your vet about year-round heartworm prevention. Change pet water bowls daily. Keep pets inside while a yard spray dries.
What a treatment visit looks like.
A visit usually takes 20 to 45 minutes. The tech walks the yard first. They dump or treat standing water. Larvicide goes in water you can't drain. Then they spray shady shrubs, where adults rest. Most plans repeat every three to four weeks.
Rain barrels and ponds.
- Barrels: cover openings with fine mesh. - Ponds: fish and moving water keep larvae down. - Bird baths: change the water every few days. - Gutters: clear them so water drains away. - Tarps: shake out any that hold rainwater. - Pool covers: drain standing water after rain.
Questions to ask before you sign.
- What product will you spray? - How often will you come? - Do you treat standing water too? - What happens if bites come back between visits? - How do you protect bees and flowers? - When can kids and pets go back outside?
What affects the price
- Number of visits the local season needs.
- Standing water requiring larvicide.
- Gutter cleaning or drainage fixes bundled in.
- Ponds, creeks, or wetland edges on the property.
- Misting system installation and refills.
- Re-treatment policy between scheduled visits.
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What is your biggest frustration with mosquitoes in your yard?
When to call for help
early in the season, before the first big wave. Ponds, drains and dense shrubs are hard to handle yourself. Call if bites still keep you indoors. Dumping water should come first.
What you can do yourself
They also spray where adults rest, every few weeks. A pro adds larvicide for water you can't drain. Use repellent and run a fan on the patio. The biggest win is free: dump standing water every week.
Mosquitoes in Jacksonville
Jacksonville gets about 50 inches of rain a year, so containers and low spots refill constantly through the season. Summer highs around 91°F in Jacksonville speed up the life cycle, and average humidity near 75% keeps adults active. In denser parts of Jacksonville, storm drains, catch basins and gutters are big breeding spots. In Jacksonville, the humid subtropical climate means mosquitoes activity tends to follow late spring through early fall; year-round in the deep south. In Jacksonville, that timing is worth keeping in mind when you schedule a visit, because treating before the busy stretch is usually cheaper and simpler than chasing a full-blown problem later, and it leaves you more time to compare providers and their written quotes.
Local research
Mosquitoes in Jacksonville, FL: what the public record shows
Before you compare quotes, it helps to know which mosquitoes actually live in Florida, when they are busiest around Jacksonville, and what the state figures look like. Everything below links to the agency or university page it came from.
West Nile neuroinvasive disease cases, 2024
Neuroinvasive counts are the most reliable state comparison because nearly all severe cases are diagnosed and reported.
CDCLocally acquired dengue cases, 2025
Local dengue transmission by Aedes aegypti is a recurring Florida problem, concentrated in Brevard and Miami-Dade.
Florida Department of HealthTravel-associated dengue cases, 2025
Imported cases seed local Aedes populations, which is why container control near homes matters in South Florida.
Florida Department of HealthMosquito species recorded in Florida
- Yellow fever mosquito (Aedes aegypti) — CDC lists Aedes aegypti as more likely than Ae. albopictus to spread dengue, Zika, and chikungunya; prefers human hosts and lives in and around homes. Tropical, subtropical, and…
When mosquitoes are busiest around Jacksonville
Year-round Aedes activity in the south; Florida DOH logged locally acquired dengue onsets from February through November 2025. WNV/EEE sentinel positives occur in most months.
Florida DOH week 53 report: Brevard and Miami-Dade under mosquito-borne illness alert; Alachua, Bay, Clay, Duval, Hernando, Hillsborough, Lafayette, Leon, Palm Beach, and Pasco under advisory at year-end 2025. Florida's endemic viruses are WNV, EEEV, and SLEV.
Rules that apply in Florida
For context, nationally
- 1,808 — West Nile virus disease cases reported, 2024. CDC
- 1,347 (75% of cases); 173 deaths — West Nile neuroinvasive disease cases, 2024. CDC
Sources: CDC; Florida Department of Health; Potential Range of Aedes Mosquitoes. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep mosquitoes away
- Dump and scrub birdbaths every week.
- Clean gutters each spring and fall.
- Replace corrugated downspout extensions with smooth pipe.
- Keep tarps taut so they shed water.
- Run a fan on the patio at dusk.
- Store buckets, wheelbarrows, and toys upside down.
Renting? Shared courtyards, drains and landscaping are usually the property manager's to handle, so let them know.Did you know?
Some species' eggs survive dry for months
Over 3,500 mosquito species exist worldwide
Questions people ask
When should mosquito treatments start each year?
Before the first big wave. Around Jacksonville, the season runs from about March into November, so start a few weeks before.
Do I need a seasonal plan or is one treatment enough?
One treatment helps for an event or a few weeks. Barrier sprays fade in three to four weeks. Steady relief takes repeat visits.
How long does a mosquito treatment last?
A barrier spray usually lasts three to four weeks. Heavy rain can shorten that.
How do I choose a mosquito control company?
Check that they're licensed in Florida. Ask what products they use and how often they visit. Ask what happens if bites come back.
Can I get rid of mosquitoes permanently?
Not completely. They fly in from nearby. Removing water and spraying resting spots cuts them down a lot.
Are mosquitoes the biggest yard pest worry for homeowners?
In Jacksonville, mosquito control works by removing standing water, treating the water that cannot be drained, and applying barrier treatments where adults rest. In Jacksonville, because they keep breeding through the season, an ongoing plan usually works best.
When is mosquito season in Jacksonville?
It runs from about March into November. Daytime biters are tiger mosquitoes; evening biters are usually house mosquitoes.
Do mosquitoes in Jacksonville carry West Nile?
They can. West Nile is found in every lower-48 state, Florida included. Cases usually peak in late summer. Repellent and dumping standing water are your best protection.
Nearby cities
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Sources (10)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Mosquito Exterminator · Updated September 11, 2026 · How we write these guides