Reclaim Your Backyard from Central Valley Mosquito Season

Long warm seasons, irrigation runoff, and endemic West Nile pressure make mosquitoes a year-after-year problem here. Barrier treatment, larvicide, and a rhythm timed to the peak cycle.

Mosquito Control treatment by Fortis Pest Control in the Central Valley.

Why Central Valley mosquitoes are a year-after-year problem

Mosquito pressure in the Central Valley is heavier and longer than most of California. The warm season runs from roughly April through October. Overnight lows stay high enough to keep the breeding cycle going. Agricultural irrigation, residential pools, decorative fountains, and landscape water features create steady standing-water sources that mosquitoes need to reproduce. The result is a long, dense mosquito season that pushes backyards out of usable rotation right when the weather is best.

West Nile virus is endemic to the region, meaning local mosquito populations carry it most years. Most exposures are mild, but the public health risk is real enough that Fresno County tracks surveillance data annually. Reducing the local mosquito population around your home is the practical lever a homeowner has.

HomeShield baseline vs HomeShield+ targeted treatment

This is the key product distinction worth understanding before you book.

  • 01

    HomeShield

    Baseline mosquito treatment during the warm months as part of standard quarterly service. Foundation, eaves, garage thresholds, and immediate perimeter, enough for most homes that aren't in the yard every evening.

  • 02

    HomeShield+

    Mosquito-focused add-on with expanded barrier spray on resting vegetation, larvicide in standing water, and a more frequent rhythm timed to peak warm-season cycles. Best for homes with heavy yard use.

Your technician can recommend a tier during the quote based on the property and how you actually use the yard.

Where mosquitoes breed around Central Valley homes

Mosquitoes need standing water to reproduce. A bottle cap of water is enough for a small batch of larvae, and most properties have more breeding sources than the homeowner realizes. The usual suspects:

  • Clogged gutters and downspout splash zones, where water sits for days after the last sprinkler cycle.
  • Plant saucers and potted-plant trays, especially in shaded areas of the patio.
  • Low spots in lawns that hold water after irrigation or rain.
  • Neglected pool covers with pooled water on top, plus pools that have gone off-cycle.
  • Bird baths, decorative fountains, and water features that aren’t moving water or aren’t refreshed weekly.
  • Buckets, kid toys, wheelbarrows, and tarps left outdoors and forgotten.
  • Tree holes and dense shaded vegetation that holds humidity even when there’s no visible water.

A walk-through with your technician usually surfaces two or three breeding sources the homeowner had never noticed.

Pricing Made Simple

Pricing scales with home size.
Quotes are free.

HomeShield

Proactive residential service

Starting at

$49 /month

  • Proactive, recurring visits throughout the year
  • Covers Central Valley's most common pests
  • Establish a pest barrier around your home
  • Re-services between visits included

HomeShield+

HomeShield with expanded mosquito treatment.

Starting at

Add-on

  • Everything in HomeShield
  • Expanded with targeted mosquito treatments
  • Yard-focused coverage through warm months
  • Best for outdoor entertainment!!

EcoShield

HomeShield with an eco-friendly product line.

Starting at

Add-on

  • Everything in HomeShield
  • Eco-friendly active ingredients
  • Same coverage, gentler products
  • Complete peace of mind for your family and pets
See full plan comparison

What you can do before we arrive

A few things make treatment more effective.

Dump standing water

In items under your control: plant saucers, kid toys, wheelbarrows, buckets, anything that's been collecting water.

Mention any low-lying yard spots

That stay wet after irrigation. These are easy to miss on a first walk-through and are common breeding sources.

Point out vegetation that stays shaded and damp

Especially dense beds under trees or against north-facing walls. That's where the adult population rests during the day, and it's the highest-yield spot to treat.

How Fortis Treats Mosquitoes

A mosquito visit hits the breeding sources, the adult resting spots, and the treatment timing in one coordinated rhythm.

01

Inspection

Yard walkthrough to identify active breeding sources and the shaded vegetation where adults rest between feedings.

02

Barrier spray

Applied to shaded, damp foliage where adult mosquitoes shelter between feedings: under shrubs, the underside of leaves, around fence lines, and in dense landscape beds.

03

Larvicide treatment

Of any standing water that can't be physically eliminated (decorative ponds, low yard spots, drainage areas) to break the cycle before adults emerge.

04

Source reduction recommendations

A short list of items you can address yourself between visits, so the treatment compounds rather than starts over each visit.

05

Treatment timing

Scheduled through the warm months so coverage runs through peak season, not just at the start of summer. For homes on HomeShield+, the rhythm is built around the mosquito cycle rather than the standard quarterly schedule.

Frequently
Asked Questions

HomeShield includes a baseline mosquito treatment as part of the standard service through the warm months, which keeps pressure down around the foundation, eaves, and immediate perimeter. HomeShield+ is the mosquito-focused add-on that extends coverage out into the yard: expanded barrier treatments on resting vegetation, larvicide in any standing water that can't be eliminated, and a treatment rhythm timed to the warm-season mosquito cycle. If you actually use your backyard between May and October, HomeShield+ is the upgrade that makes the difference.

Functionally, May through October, with peak pressure from mid-June through September. Warm overnight temperatures, irrigation runoff, and residential water features keep the breeding cycle running longer here than in cooler parts of California. We start ramping treatment ahead of peak so the first wave doesn't establish a strong local population.

West Nile is endemic to the Central Valley, meaning it's present in the local mosquito population most years. Most human cases are mild or asymptomatic, but serious cases happen, particularly in older adults. The practical takeaway is that reducing the mosquito population around your home reduces your exposure. The Fresno County Department of Public Health publishes annual surveillance data if you want to track the local picture.

Yes. Barrier sprays are family-friendly once dry, typically 30 to 60 minutes after application. Larvicide products used in standing water are formulated to be selective for mosquito larvae and are family-friendly for pets and wildlife at label rates. Your technician will walk you through which areas to stay out of for the first hour. For households that want a gentler product line, EcoShield is available as an upgrade.

No service can promise zero mosquitoes on a Central Valley property, because mosquitoes fly in from neighboring yards and shared water sources. What treatment does is reduce the local breeding population, knock down resting adults, and make the yard noticeably more usable during peak season. Most HomeShield+ homes see a clear improvement within the first two visits.

Get your Mosquito Control quote

Share a few details about your pest problem and we'll get back to you with a free quote, usually within the same business day.

  • Free consultation

    Walk through your pest problem with a real Fortis tech, not a sales script.

  • Same-day quotes

    Most requests get a response within the same business day.

  • Family-friendly service

    Treatments are family-friendly once dry, typically 30 to 60 minutes after application.

  • Local and licensed

    Family and veteran owned. California license PR 9962.

Hours

Monday through Friday, 8am to 5pm Pacific

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