The short version
Around Durham, mosquito season runs from about April through October. 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 Durham who want their yard back.
What to look for
Often the source is a neighbor's yard or a storm drain. Mosquitoes breed in standing water, even a bottle cap's worth. In summer heat, eggs become biting adults in about a week.
- 1Kiddie pools left full for days.
- 2Dogs testing positive for heartworm.
- 3A neighbor's pool turning green and untended.
- 4Wriggling larvae in birdbaths, buckets, or saucers.
- 5Bites within minutes of stepping outside at dusk.
- 6Swarms rising from shrubs when you brush past.
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)
The inspector checks resting spots too: dense shrubs, ivy, under decks, and shaded fence lines around your Durham home. Knowing where adults hide shows where barrier spray matters.
- Time
- 30–60 minutes
- Best for
- Every yard; finds where mosquitoes actually breed
Source Reduction and Larviciding
$75–$150 per visit
Source reduction just means taking away the water mosquitoes need: tipping containers, clearing gutters, fixing drainage and filling ruts around your Durham yard. It is the cheapest control there is.
- Time
- 45–90 minutes
- Best for
- Yards with standing water, clogged gutters, ponds, or drains
Barrier (Residual) Yard Treatment
$75–$200 per visit; $350–$900 per season
Most programs use a pyrethroid spray from a backpack mister. It fades over three to four weeks. Repeat visits keep the coverage up through the season.
- Time
- 20–45 minutes per visit, repeated every 3–4 weeks
- Best for
- Shaded yards with shrubs, ivy, and dense landscaping
Misting Systems and In2Care-Style Stations
misting $2,000–$4,500 installed plus refills; stations $200–$500 per season
Neither option replaces the basics. A pro should still dump and treat standing water every visit.
- Time
- Misting: half a day. Stations: under an hour.
- Best for
- Specific yards: heavy outdoor use or spray-averse owners
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 Durham.
They're black-and-white and bite by day. They breed in small containers. House mosquitoes (Culex) bite from dusk into the night. They breed in storm drains. They're the main West Nile carriers. Asian tiger mosquitoes are common around Durham.
Local mosquitoes conditions in Durham.
A provider who works Durham and North Carolina 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. Durham 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. Across Durham, 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 Durham usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Durham'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.
Mosquitoes that bite indoors usually slip in through gaps around doors or torn window screens.Mosquito season in Durham.
That's a long season. Plan on regular visits. West Nile cases usually peak in late summer.
A year of mosquitoes in Durham.
- Spring: the first wave arrives early in Durham. Start treatments then. - Summer: with highs near 89°F in Durham, 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.
- 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. - Gutters: clear leaves so water drains.
Avoiding bites.
- 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. - Repellent: DEET, picaridin, IR3535 or oil of lemon eucalyptus.
Low-cost ways to cut mosquitoes.
- 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 dunks: Bti tablets kill larvae in rain barrels and ponds.
Mosquito or look-alike?
- 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. - Crane flies: look like giant mosquitoes. They don’t bite.
When a bite needs a doctor.
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. Most bites just itch for a few days.
Protecting your pets.
Heartworm reaches dogs through mosquito bites, and cats can get it as well; Durham's season runs roughly May into December, so year-round prevention is the usual advice. Talk to your vet about year-round prevention. Refresh pet water bowls daily; with about 46 inches of rain a year in Durham, bowls and plant saucers refill themselves. Keep animals inside until a yard treatment dries.
What a treatment visit looks like.
Then they spray shady shrubs, where adults rest. Most plans repeat every three to four weeks. 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.
Rain barrels and ponds.
- 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. - Barrels: cover openings with fine mesh.
Questions to ask before you sign.
- 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 product will you spray?
Why mosquito problems come back after you treat.
Mosquitoes breed in standing water, and new adults keep emerging as long as that water is there. A barrier spray kills the adults that are flying, but it does not stop the next generation. That is why the most effective control starts with removing or treating the water, then adding larvicide and barrier treatments for the adults.
Source reduction is the cheapest control.
Emptying the water mosquitoes use is free and does more than any product — gutters, buckets, saucers, toys, tarps, and anything else that holds water for a week. Treat the water that cannot be drained, and the breeding stops. A yard with no standing water is a yard mosquitoes mostly pass over.
What affects the price
- Commercial or multi-unit property.
- Number of visits the local season needs.
- Lot size and total acreage treated.
- Re-treatment policy between scheduled visits.
- Standing water requiring larvicide.
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What's your biggest concern about mosquitoes?
When to call for help
Ponds, drains and dense shrubs are hard to handle yourself. early in the season, before the first big wave. Dumping water should come first. Call if bites still keep you indoors.
What you can do yourself
The biggest win is free: dump standing water every week. Use repellent and run a fan on the patio. A pro adds larvicide for water you can't drain. They also spray where adults rest, every few weeks.
Mosquitoes in Durham
Summer highs around 89°F in Durham speed up the life cycle, and average humidity near 71% keeps adults active. In denser parts of Durham, storm drains, catch basins and gutters are big breeding spots. Durham gets about 46 inches of rain a year, so containers and low spots refill constantly through the season.
Local research
Mosquitoes in Durham, NC: what the public record shows
Before you compare quotes, it helps to know which mosquitoes actually live in North Carolina, when they are busiest around Durham, 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.
CDCOther arboviral disease, 2024
Other mosquito-borne (or, for Powassan, tick-borne) viruses that appear in this state's 2024 surveillance.
CDCWhen mosquitoes are busiest around Durham
CDC: West Nile transmission June through October, peaking late August to early September. Illinois found its first positive mosquito batch of 2025 on May 9, so larval control should start in May.
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. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep mosquitoes away
- Run a fan on the patio at dusk.
- Tighten lids on trash and recycling bins.
- Fix low spots that hold water for days.
- Wear DEET or picaridin repellent outdoors.
- Keep tarps taut so they shed water.
When you compare quotes, look at the season total, how many visits it covers and what happens if the bites come back.Did you know?
Larvae are called wrigglers; pupae are tumblers
Some species' eggs survive dry for months
Questions people ask
What is the difference between larvicide and barrier spray?
Barrier spray goes on leaves where adults rest. Most plans use both. It stops larvae from maturing.
When should mosquito treatments start each year?
Before the first big wave. Around Durham, the season runs from about April through October, so start a few weeks before.
What does a mosquito inspection involve?
They also check shady spots where adults rest. Gutters, saucers, tarps and low spots get checked first. The tech walks the yard looking for standing water.
Why are there so many mosquitoes in my yard specifically?
Usually there's water nearby, like a clogged gutter or tarp. Shady, damp plants give them a place to rest.
How long does a mosquito treatment last?
A barrier spray usually lasts three to four weeks. Heavy rain can shorten that.
When is mosquito season in Durham?
It runs from about April through October. Daytime biters are tiger mosquitoes; evening biters are usually house mosquitoes.
Do mosquitoes in Durham carry West Nile?
Cases usually peak in late summer. Repellent and dumping standing water are your best protection. They can. West Nile is found in every lower-48 state, North Carolina included.
Nearby cities
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Sources (11)
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