The Flea Problem That Doesn't Take Winter Off

Mild California winters keep the flea cycle running 12 months a year. Indoor, yard, and pet-bedding treatment scheduled around the life cycle for Fresno, Clovis, Hanford, and Visalia.

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

Why fleas are different in California

Fleas don't take winters off in the Central Valley. In colder states, the cold months break the flea life cycle and homes get a natural pause from fall through early spring. California doesn't give homeowners that pause. Mild winters in Fresno, Clovis, Hanford, and Visalia keep the cycle running all twelve months, which means a flea problem in February is just as likely as a flea problem in August.

The other reality of flea calls is that the audience is almost always a pet owner. Dogs and cats are the carriers that bring fleas into the house, and once an indoor population establishes, the fleas stop needing the pet to maintain themselves. They feed on the animal but breed in the environment. That's the part homeowners often miss.

The three places fleas live

Effective flea treatment works a triangle. Skip a side and the population rebuilds from whichever side wasn't covered.

  • 01

    The pet itself

    Your vet's responsibility. A current flea preventive (oral or topical) keeps fleas off the animal. Without it, the indoor and yard work won't hold.

  • 02

    Indoor areas

    Carpets, rugs, upholstery, pet bedding, and the gap behind the baseboard. This is where eggs fall off the pet and the next generation grows up.

  • 03

    The yard

    Shaded outdoor spots where pets rest: under the deck, beside the AC unit, along the north side of the house. Fleas thrive in shade and organic debris, not open sun.

Fortis treats the indoor and outdoor sides directly and coordinates the timing of those treatments with the flea preventive your vet provides for the pet.

The flea life cycle and why one visit isn’t enough

A flea population at any given moment is roughly 5 percent adults, 10 percent pupae, 35 percent larvae, and 50 percent eggs. The adults are the only stage you actually see. Everything else is in the carpet, in the yard soil, in the pet bedding, working its way toward adulthood.

Of those four stages, the pupa is the problem. Pupae are dormant, sealed in a protective cocoon, and resistant to insecticide. They will not hatch until they sense vibration, warmth, or carbon dioxide, signals that an animal is nearby to feed on. A single treatment kills adults, eggs, and larvae but doesn’t touch the pupae. As the pupae hatch over the next two to three weeks, you see what looks like a treatment failure. It isn’t. It’s the next wave.

That’s why flea service includes a follow-up visit at 10 to 14 days, timed to catch the new adults as they emerge before they can lay the next round of eggs.

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

Pre-visit and post-visit steps make the treatment hold.

Vacuum the day before

Hit carpets, rugs, upholstery, baseboards, and under furniture. Dump the vacuum bag or canister into an outdoor trash bin immediately after.

Wash pet bedding

Hot water wash and high-heat dry. The bedding is where most of the eggs and larvae are concentrated.

Coordinate with your vet

Make sure the pet's flea preventive is current and active on treatment day so the indoor and yard work isn't restarted from the pet.

Restrict pets after the visit

Keep pets off treated interior surfaces for the first hour, until everything is dry.

How Fortis Treats Fleas

A flea visit covers both indoor active zones and the yard, scheduled to the life cycle so the second wave doesn't restart the problem.

01

Interior treatment

Insect growth regulator (IGR) plus an adulticide applied to carpets, baseboards, pet bedding areas, and upholstery in active zones. The IGR disrupts the development of eggs and larvae; the adulticide handles what's already adult.

02

Yard treatment

Focused on shaded resting areas where pets spend time outdoors: the perimeter, under decks, and along the foundation on the shaded side of the house. We skip the open lawn, which isn't where fleas live.

03

Follow-up visit

10 to 14 days after the initial treatment, timed to the pupal hatch window so the next wave of emerging adults is handled before it can lay new eggs.

Frequently
Asked Questions

Because of the pupae. The flea life cycle has four stages (eggs, larvae, pupae, adults), and the pupa is the one that breaks treatment expectations. Pupae are dormant, sealed in a cocoon, and untreatable until they hatch into adults. A single treatment kills the adults present and the eggs and larvae it reaches, but the pupae already in the carpet or yard will continue hatching for the next two to three weeks. That's why we schedule a follow-up visit 10 to 14 days out: to catch the next wave as it emerges.

Yes, and you'll handle that side through your vet. Flea control is a three-part problem (the pet, the inside of the house, and the yard), and each part has to be treated for the others to hold. We cover the indoor and outdoor sides directly. The pet itself is your vet's domain. Coordinate the timing so the pet treatment is current when we treat the home, otherwise fleas will jump right back onto the animal and the cycle restarts.

Yes. The products we use are family-friendly once dry, typically about an hour after application. Your technician will let you know which interior areas to stay out of for the first hour, and pets should be kept off treated indoor surfaces during that window. For households that want a gentler product line, our EcoShield add-on uses eco-friendly active ingredients.

Yes, and it makes a real difference. Vacuuming agitates the dormant pupae in the carpet, which prompts them to hatch into adults. Adults are the stage we can actually kill. So a thorough vacuum the day before treatment pulls the pupae out of dormancy and into the window where the product works on them. Empty the vacuum into an outdoor trash bin right after, not back into the house.

Yes. Flea control is covered under the HomeShield plan as part of general pest service, starting at $49 per month. The follow-up visit timing for fleas (10 to 14 days) is more compressed than the standard quarterly rhythm, and we'll schedule that separately during an active infestation.

Most homes are clear within four to six weeks from the first visit, assuming the pet is on a current flea preventive and the follow-up visit is on schedule. The first treatment hits the adults, eggs, and larvae. The follow-up catches the pupae as they hatch. Within two life cycles, the population collapses.

Get your Flea 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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