The short version
Around Alexandria, mosquito season runs from about May through September. Treatment means removing water and treating what you can't drain. A barrier spray follows every few weeks.
- 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 Alexandria who want their yard back.
What to look for
Often the source is a neighbor's yard or a storm drain. In summer heat, eggs become biting adults in about a week. Mosquitoes breed in standing water, even a bottle cap's worth.
- 1Swarms rising from shrubs when you brush past.
- 2Rain barrels without screens or lids.
- 3Welts on ankles and calves after yardwork.
- 4Ornamental pond with no fish or pump.
- 5A sump pit or crawl space holding water.
- 6Egg rafts floating on stagnant 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 📅
Mosquito activity through the year in Alexandria
Spring
dump water and clean gutters before May.
Summer
peak season in Alexandria, especially July and August.
Fall
activity fades with cooler nights.
Winter
fix drainage and store containers upside down.
Treatment options and typical costs
Property Inspection for Breeding Sites
$0–$150 (often bundled with a first treatment)
A good job starts with a walk of the whole yard. The tech looks for water that sits for days. Gutters, plant saucers, tarps, and low spots get checked first.
- Time
- 30–60 minutes
- Best for
- Every yard; finds where mosquitoes actually breed
Monitoring and Seasonal Plans
$50–$150 per follow-up visit; $350–$900 per season bundled
Between visits in Alexandria, a good pro uses traps or landing counts to check the treatment is still working. Numbers climbing early means a missed breeding site.
- Time
- 15–30 minutes per check; season runs spring through first frost
- Best for
- Anyone who wants the yard usable all summer
Source Reduction and Larviciding
$75–$150 per visit
This visit often doubles as homeowner coaching, since most breeding sites on an Alexandria lot can be eliminated by hand. A pro points them out so they stay gone.
- Time
- 45–90 minutes
- Best for
- Yards with standing water, clogged gutters, ponds, or drains
Misting Systems and In2Care-Style Stations
misting $2,000–$4,500 installed plus refills; stations $200–$500 per season
Expect a site walk before any install on an Alexandria property, since nozzle placement and station count depend on the shape of the lot. Ask for the refill and service costs up front.
- 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.
A treatment visit covers the shaded plants and beds where adults rest, along with any standing water that can't be drained.How mosquito treatment works in Alexandria.
For Alexandria homes, the season runs from about May through September, so a plan usually starts in spring and runs to the end of the season. Larvicide handles water you can't drain, like ponds or drains. Barrier spray covers shady shrubs and leaves. Treatment has two parts. First, find and remove the water where they breed. Then spray where the adults rest.
Which mosquitoes bite around Alexandria.
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 Alexandria. They're black-and-white and bite by day. They breed in small containers.
Mosquitoes that bite indoors usually slip in through gaps around doors or torn window screens.Mosquito season in Alexandria.
Numbers usually peak in July and August. West Nile cases usually peak in late summer.
A year of mosquitoes in Alexandria.
- Summer: peak season in Alexandria, especially July and August. - Fall: activity fades with cooler nights. - Winter: fix drainage and store containers upside down. - Spring: dump water and clean gutters before May.
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.
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. Most people infected with West Nile virus never feel sick.
Protecting your pets.
Ask your vet about year-round heartworm prevention. Change pet water bowls daily. Keep pets inside while a yard spray dries. Dogs get heartworm from mosquito bites. Cats can too.
What a treatment visit looks like.
Larvicide goes in water you can't drain. 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.
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?
What affects the price
- Gutter cleaning or drainage fixes bundled in.
- Misting system installation and refills.
- Special-event timing and rush scheduling.
- Travel distance from the company's base.
- Ponds, creeks, or wetland edges on the property.
- One-time visit versus a seasonal plan.
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What's your biggest concern about mosquitoes?
When to call for help
Call if bites still keep you indoors. Dumping water should come first. early in the season, before the first big wave. Ponds, drains and dense shrubs are hard to handle yourself.
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 Alexandria
With about 42 inches of rain a year in Alexandria, any container left out will hold water within days. Summer highs around 88°F in Alexandria speed up the life cycle, and average humidity near 66% keeps adults active. In denser parts of Alexandria, storm drains, catch basins and gutters are big breeding spots. Alexandria has a humid subtropical climate, and mosquitoes activity here tends to pick up late spring through early fall; year-round in the deep south. For Alexandria homes, most of the housing is urban, so the usual entry points, moisture spots, and sheltered areas near the structure are what an inspection checks first. For Alexandria homes, take a minute to note where you have seen activity and when it appears, so the inspection is faster and the quote more accurate. A local provider who knows Alexandria and Virginia can point out the specific conditions that matter most here before you commit to a plan. For Alexandria homes, before you book, ask whether the inspection is included, what the treatment plan covers, how many visits to expect, and what the written quote includes. For Alexandria homes, getting the scope, the prep steps, and any follow-up terms in writing makes it much easier to compare providers fairly, and a good provider will walk you through each of these without pressure.
Local research
Mosquitoes in Alexandria, VA: what the public record shows
Before you compare quotes, it helps to know which mosquitoes actually live in Virginia, when they are busiest around Alexandria, 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.
CDCWhen mosquitoes are busiest around Alexandria
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
- Store buckets, wheelbarrows, and toys upside down.
- Replace corrugated downspout extensions with smooth pipe.
- Talk with neighbors about shared breeding sites.
- Run a fan on the patio at dusk.
- Add fish or a pump to ornamental ponds.
- Keep tarps taut so they shed water.
Jot down where you found standing water and when you get bitten. It gives a pro a head start.Did you know?
Tiger mosquitoes arrived in used tires in the 1980s
Over 3,500 mosquito species exist worldwide
Questions people ask
What if the mosquitoes are coming from my neighbor's property?
That's common. Treat your own yard and talk to your neighbor. Your local mosquito control district or health department can also help.
When should mosquito treatments start each year?
Before the first big wave. Around Alexandria, the season runs from about May through September, so start a few weeks before.
What is the difference between larvicide and barrier spray?
It stops larvae from maturing. Barrier spray goes on leaves where adults rest. Most plans use both.
What should I do before the pro arrives?
Dump standing water. Move toys and pet bowls. Tell them where you get bitten most.
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.
Do mosquitoes really change how people use their yards?
For Alexandria homes, mosquito control works by removing standing water, treating the water that cannot be drained, and applying barrier treatments where adults rest. For Alexandria homes, because they keep breeding through the season, an ongoing plan usually works best.
When is mosquito season in Alexandria?
It runs from about May through September. Daytime biters are tiger mosquitoes; evening biters are usually house mosquitoes.
Do mosquitoes in Alexandria carry West Nile?
They can. West Nile is found in every lower-48 state, Virginia included. Cases usually peak in late summer. Repellent and dumping standing water are your best protection.
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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