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Risk 3/5

Northern House Mosquito

Culex pipiens · “The Common Pest”

Brown mosquito with banded legs. Common in temperate climates. Often enters homes at night. Prefers standing water with organic matter.

Disease risks

High

West Nile Virus

Prevalence: High

High

St. Louis Encephalitis

Prevalence: Moderate

Low

Avian Malaria

Prevalence: Moderate

How to identify

Appearance
Size
4-6mm (small)
Color
Brown with darker markings
Distinctive features
Banded legs and abdomen; rounded abdomen when resting
Resting posture
Head-up posture (unlike Aedes)
Bite behavior
Prefers
Humans and birds equally
Pain level
Low to moderate
Persistence
Moderate; less aggressive than Aedes
Transmission
Efficient vector for West Nile Virus; moderate for others

What actually works

Effectiveness 9/10

Pyrethroid Spray Treatment

Professional-grade synthetic pyrethroid insecticide applied by licensed technicians. Fast-acting, EPA-approved, effective against adult mosquitoes.

Effectiveness 8/10

Perimeter Barrier Spray

Professional application of insecticide around property perimeter. Creates a 'moat' of protection that kills mosquitoes attempting to enter treated areas.

Effectiveness 10/10

Habitat Elimination (Source Control)

Removal and treatment of breeding sites. Professional inspection identifies and eliminates standing water where mosquitoes lay eggs.

Effectiveness 9/10

Drain & Catch Basin Treatment

Professional treatment of storm drains and catch basins where Culex mosquitoes breed. Licensed technician application with long-lasting IGR.

Effectiveness 9/10

ULV Mosquito Fogging

Ultra-Low Volume fogging using specialized equipment to create fine mist of insecticide. Covers large areas quickly; used for emergency mosquito swarms.

Fun fact

Culex pipiens are the primary vectors for West Nile Virus in North America, spreading the disease through bird populations and occasionally to humans.

About the Northern House Mosquito

Yes — Northern House Mosquito carries West Nile Virus, St. Louis Encephalitis, Avian Malaria. Efficient vector for West Nile Virus; moderate for others