How to Get Rid of Fleas in the House

To get rid of fleas in the house, treat every pet with an effective flea preventive, vacuum daily, and spray floors and furniture with a product that combines an adult-killer and an insect growth regulator (IGR), then repeat after 10 to 14 days. Doing all of it at once, and doing it twice, is what separates people who are flea-free in a month from those still fighting in spring.

Why fleas keep coming back

Only about 5% of a flea population is the adults you see. The rest are eggs, larvae and cocoons in carpet, cracks and pet bedding. Eggs fall off your pet wherever it rests; larvae burrow away from light; cocoons resist almost every insecticide. A spray that kills adults today leaves a new wave hatching over the next two to three weeks. That's not failure, it's the life cycle (details on the flea overview page).

So the plan has to:

1. Make pets lethal to fleas, so every new flea that jumps on dies before laying eggs.
2. Kill and remove eggs and larvae in the house.
3. Force cocoons to hatch while the treatment is still active.
4. Cut off the source: wildlife, other pets, the yard.

Step-by-step: how to get rid of fleas in the house

1. Treat every pet the same day. Dogs and cats, including the indoor cat that "never has fleas." Use a vet-recommended product: an oral isoxazoline (fluralaner, afoxolaner, sarolaner, lotilaner), spinosad, or a spot-on with fipronil plus S-methoprene, imidacloprid or selamectin. Keep it going monthly for at least three months. Never use a dog product on a cat: permethrin dog spot-ons can kill cats. Details: fleas on dogs, fleas on cats.
2. Wash everything washable. Pet beds, throws, slipcovers, small rugs and bedding in hot water, then a hot dryer cycle. Heat kills every stage.
3. Vacuum thoroughly. Carpets, rugs, upholstery, under cushions, under beds and couches, along baseboards and into floor cracks. Use the crevice tool. Vacuuming removes eggs, larvae and flea dirt, and the vibration triggers cocoons to hatch. Empty the canister or bag outside into a sealed trash bag.
4. Spray with an adulticide plus an IGR. Look for methoprene or pyriproxyfen on the label next to an adult-killer such as permethrin, cyphenothrin or etofenprox. The IGR stops eggs and larvae from ever becoming adults and keeps working for months. Spray carpets, rugs, under and behind furniture, pet resting spots and baseboards, up to about a foot high. Fleas don't live higher. Keep people and pets off until dry, as the label says.
5. Vacuum daily for two to three weeks. This is the step people drop. Each pass pulls out new larvae and forces cocoons to hatch into the treated zone.
6. Repeat the spray after 10 to 14 days. It catches the wave that hatched from cocoons the first spray couldn't reach.
7. Fix the source. If you have no pets, or the problem keeps returning, look for raccoons, opossums, feral cats or rats under the porch, in the crawl space or attic. Exclude them, then treat those spots.

How to get rid of fleas in the house fast

Want results in a day? Give pets a fast-acting oral (nitenpyram kills adult fleas on the animal within about 30 minutes; it lasts only about a day, so pair it with a long-acting preventive), wash bedding, vacuum and spray. Bites drop noticeably within 24 to 48 hours. But "how to get rid of fleas in 24 hours" has no honest answer: cocoons will hatch for weeks. Plan on three to six weeks to be fully clear.

What kills fleas: products that work

Always read the full label, and check the product is EPA-registered for the use. Questions about a specific active ingredient: the National Pesticide Information Center (NPIC) answers by phone.

What fails, and why

• Treating only the pet or only the house. The other half reseeds the problem.
• Flea bombs (foggers). The mist lands on open surfaces, not under furniture or deep in carpet. They also carry fire and exposure risks.
• Flea shampoo as the main treatment. It kills fleas on the pet today, with no lasting effect.
• Old-style cheap collars. Many give weak protection; the effective ones are specific products your vet can name.
• One treatment and done. The cocoon stage guarantees a second wave.
• Stopping pet treatment after a month. Keep it going at least three months, ideally year-round in warm states.
• Salt, baking soda, vinegar, essential oils. See home remedies for fleas for what helps a little and what doesn't.

Fleas in the bed and on you

Strip and hot-wash bedding, vacuum the mattress and the bed frame, and keep pets off the bed until they've been on a preventive for a few weeks. More in fleas in bed. If fleas are biting you with no pet in the home, see can humans get fleas.

How to get rid of fleas in the yard

Fleas only develop outdoors in shaded, moist, protected spots. Treat:

• Under decks and porches, around crawl space openings.
• Dog runs, dog houses, along fences where pets lie.
• Under shrubs and in ground cover.

Rake out leaf litter, keep grass mowed, and let sunlight in. Spray those spots with a labeled outdoor product containing an IGR, or apply beneficial nematodes (Steinernema carpocapsae), which hunt flea larvae in moist soil. Sunny lawn is too hot and dry for larvae; spraying it wastes money and kills beneficial insects.

When to call a pro

• You've done two full cycles (pets + house + repeat) and still see steady numbers after a month.
• A large home with lots of carpet and upholstered furniture.
• Wildlife under the house: you need removal and exclusion, not just spraying.
• Someone in the home is pregnant, has asthma or you'd rather not apply pesticides yourself.

A typical flea service costs roughly $150 to $400 for an average house, often including a follow-up visit (approximate; varies by region and size). The service will still ask you to treat pets and vacuum, because nobody can do that part for you. More on pricing: pest control cost.