Mosquito (Culicidae family) — Identification & Biology

• Asian tiger mosquito (Aedes albopictus) — the #1 backyard biter in the Triangle. Aggressive, day-active, breeds in tiny amounts of standing water (bottle caps, plant saucers, gutters). Distinctive black-and-white striped legs.
• Common house mosquito (Culex pipiens) — the primary West Nile virus vector in NC. Larger, brown, active at dawn/dusk, breeds in stagnant standing water (birdbaths, ditches, storm drains).
• Floodwater mosquitoes (Aedes vexans and related) — emerge in swarms after heavy summer rains from temporary pooled water.
• Container mosquitoes — several species that specialize in artificial containers (tires, buckets, tarps, kiddie pools).

Each species has different biting behavior and different breeding preferences, which is why professional treatment addresses the whole yard's habitat, not just adults on the wing.

Mosquito-borne disease risk in the Triangle is real, though case counts vary year to year. The main concerns:

• West Nile virus — endemic in NC, primarily via Culex mosquitoes. Most infections are mild or asymptomatic, but severe cases (encephalitis, meningitis) occur.
• Eastern equine encephalitis (EEE) — rare but serious; horse vaccinations are standard in NC for this reason.
• La Crosse encephalitis — noted in mountain NC, particularly affecting children.
• Zika, dengue, chikungunya — transmitted by Aedes mosquitoes and periodically reported in travelers returning to NC; local transmission has not been established but the vector is present.
• Dog heartworm — a year-round mosquito-transmitted parasite; all Triangle dogs should be on veterinarian-prescribed prevention.

Personal repellents plus a treated yard significantly reduce both bite counts and disease exposure.

Every mosquito control conversation should start with breeding-site elimination — because a treated yard with active breeding sites will keep producing new mosquitoes. Common Triangle breeding sites people miss:

• Plant saucers under potted plants — top mosquito nursery in most yards.
• Clogged gutters holding organic debris and water.
• Birdbaths (change water twice a week or add a small pump).
• Corrugated downspout extensions that never fully drain.
• Kids' toys, kiddie pools, wagons, sandbox lids.
• Old tires or rims stored outdoors.
• Tarps, boat covers, and grill covers with folds that hold rainwater.
• Recycling bins left uncovered.
• Ornamental ponds without fish or aeration.
• Tree holes and rot cavities in mature trees.

Aedes species — including the Asian tiger — need only a teaspoon of standing water to breed.

Central NC's summer climate is essentially designed for mosquitoes: temperatures in the 80s and 90s, high humidity, frequent afternoon thunderstorms creating fresh standing water, and long warm seasons that let multiple generations reproduce. Add typical Triangle landscape features — mature tree canopy providing shade, ornamental water features, dense residential lots with vegetation and gutters — and the pressure is high in almost every neighborhood.

Wooded neighborhoods (Duke Forest, Hope Valley, older Chapel Hill, Umstead-adjacent Raleigh) see the highest pressure, but even open new subdivisions produce heavy Aedes populations from artificial container breeding.

Castle’s mosquito control services are:

• Barrier treatment of shaded foliage and resting areas.
• Larval control in standing water that cannot be removed.
• In2Care mosquito trap stations, serviced on a schedule.
• Monthly seasonal programs through the warm months.
• Special event treatments before an outdoor gathering.

Results vary with weather, neighboring properties and breeding sources. We do not install misting systems or promise a percentage reduction.

• Dump standing water from plant saucers, birdbaths, buckets, and toys twice a week.
• Keep gutters clean and free-flowing.
• Wear EPA-registered repellents (DEET, picaridin, oil of lemon eucalyptus) during outdoor time.
• Wear long sleeves and pants at dawn and dusk when Culex activity peaks.
• Repair torn window screens.
• Run fans on the patio — mosquitoes are weak flyers and struggle against airflow.
• Consider permethrin-treated outdoor clothing for camping or heavy exposure.
• Keep pets on year-round veterinarian-prescribed heartworm prevention.