Mosquitoes used to be a seasonal nuisance in Los Angeles. That changed when invasive Aedes mosquitoes established themselves across Southern California. These aggressive daytime biters breed in tiny amounts of water, thrive in urban environments, and can transmit serious diseases. For LA homeowners, mosquito control is no longer just about comfort — it's about health.
The Mosquito Problem in Los Angeles
Southern California's warm climate and limited rainfall might seem like poor conditions for mosquitoes, but LA's irrigation systems, swimming pools, neglected fountains, and container clutter provide more than enough standing water to sustain large mosquito populations year-round.
The Greater Los Angeles County Vector Control District has documented a dramatic increase in invasive Aedes mosquito populations since they were first detected in the region. These mosquitoes are now established in communities across LA County, Orange County, and the Inland Empire, and they behave very differently from the native species most residents are familiar with.
Two Types of Mosquitoes in LA
Native Mosquitoes (Culex species)
These are the mosquitoes most Angelenos grew up with. They're most active at dawn and dusk, breed in larger bodies of standing water like neglected pools and storm drains, and are the primary carriers of West Nile virus in Southern California. LA County reports West Nile virus activity every year, with cases typically peaking between July and October.
Invasive Aedes Mosquitoes
The Aedes aegypti (yellow fever mosquito) and Aedes albopictus (Asian tiger mosquito) are the species reshaping mosquito control in LA. Unlike native mosquitoes, Aedes mosquitoes bite aggressively during the day, prefer to feed on humans over animals, and can breed in a container as small as a bottle cap filled with water.
These species are capable of transmitting dengue, Zika, and chikungunya — diseases that were previously not a local concern. While large-scale outbreaks have not occurred in LA, the presence of competent vectors means the risk is real, especially as global travel brings infected individuals through the region.
Where Mosquitoes Breed on Your Property
Eliminating breeding sites is the most effective form of mosquito control. Mosquitoes don't travel far from where they hatch, so reducing standing water on your property directly reduces the mosquitoes biting you. Here are the most common breeding sources on LA properties:
- Plant saucers and drip trays — the number one backyard breeding source in Los Angeles. Empty and scrub them weekly, or add a layer of sand to absorb excess water.
- Clogged rain gutters — even in dry months, irrigation overspray and dew can pool in debris-filled gutters
- Pet water bowls — refresh daily. Aedes mosquitoes can complete their egg-to-adult cycle in as little as seven days.
- Neglected pools, spas, and fountains — unmaintained water features are massive breeding grounds. If not in use, drain completely or treat with mosquito dunks.
- Trash cans and recycling bins — any container that collects rainwater or irrigation runoff. Drill drainage holes in the bottom.
- Tires, toys, and yard clutter — anything that holds even a small amount of water for more than a few days
- Irrigation system leaks — low-flow leaks near foundations, planter boxes, and hardscape create shallow pools that Aedes mosquitoes love
DIY Mosquito Reduction: What Works
Source elimination comes first. No spray, trap, or repellent is as effective as removing standing water. Walk your entire property once a week and dump, drain, or scrub anything holding water. Pay special attention to shaded areas where water evaporates slowly.
Mosquito dunks for water you can't drain. Bacillus thuringiensis israelensis (Bti) dunks are biological larvicides that kill mosquito larvae without harming fish, pets, birds, or beneficial insects. Drop them into ornamental ponds, rain barrels, or any water feature you can't empty. They last about 30 days each.
Fans on your patio. Mosquitoes are weak fliers. A simple oscillating fan on your outdoor seating area makes it dramatically harder for them to land and bite. This is one of the most underrated mosquito deterrents.
Maintain your landscaping. Mosquitoes rest in dense vegetation during the heat of the day. Keep shrubs trimmed, mow regularly, and clear leaf litter from shaded areas near your house. Reducing resting habitat makes your yard less hospitable.
Professional Mosquito Control Services
When DIY efforts aren't enough — especially during peak season or if you're dealing with a heavy Aedes population — professional mosquito control provides an additional layer of protection.
Barrier Treatments
A licensed technician applies a residual product to vegetation, fence lines, under eaves, and other mosquito resting areas around your property perimeter. This creates a barrier that kills or repels adult mosquitoes on contact. Treatments typically last three to four weeks and are most effective when combined with source reduction.
Larvicide Applications
For properties with water features, drainage issues, or breeding sites that can't be fully eliminated, targeted larvicide treatments prevent mosquito larvae from developing into biting adults. This is especially important for properties near channels, storm drains, or areas with persistent moisture.
Recurring Service Programs
Mosquito pressure in LA runs roughly March through November, with peak activity from June through September. A recurring monthly or bi-monthly program during these months keeps populations suppressed and gives you consistent protection throughout the season.
Get Mosquito Control for Your LA Property
Squash Exterminating provides residential and commercial mosquito control across Los Angeles County, Orange County, and Ventura County. We'll inspect your property for breeding sites, apply targeted treatments, and set you up on a seasonal program that keeps mosquitoes under control all year.
Call us at (323) 855-3567 or send us an email to schedule a free property assessment.
Take Back Your Yard from Mosquitoes
Free property assessment. Targeted treatments. Seasonal protection programs.
Call (323) 855-3567