Dog owner inspecting a carpet for fleas during a flea infestation at home.

How to Get Rid of Fleas on Your Dog and in Your House

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Spotting fleas on your dog, or worse, in the carpet, is enough to make your own skin crawl. Here’s the good part: you can clear them out completely. The trick is hitting your dog and your house at the same time, because treating one without the other is what keeps people stuck in the cycle for months. Below is the exact order to work in.

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Why Treating the Dog Isn’t Enough: The 5% / 95% Rule

The fleas you can see on your dog are only about 5% of the problem. The University of Sydney puts the other 95%, a hidden mix of eggs, larvae and pupae, in your carpets, bedding and furniture. That’s the reason you have to treat the dog and the environment together. Do one without the other and the survivors simply restart the cycle.

Step 1: Get Rid of the Fleas on Your Dog

Start with the dog. Killing the adult fleas gives your dog fast relief and shuts down the egg-laying that feeds the whole infestation.

Knock them down fast: A fast-acting oral flea tablet like Capstar starts killing adult fleas in under 30 minutes.
Bath with a flea shampoo: Give your dog a thorough wash with a medicated flea shampoo to strip out and kill whatever is left in the coat.
Start long-term prevention: This is the step that matters most. Put your dog on a vet-approved preventative (Bravecto, NexGard Spectra or Simparica Trio) so any flea that jumps on from the house dies before it can breed.

Step 2: Get Rid of Fleas in Your House (the Other 95%)

Wash everything hot: Machine wash all pet bedding, blankets and cushion covers in the hottest water the fabric will take, ideally above 60°C.
Vacuum every day: Vacuum carpets, rugs and furniture daily for at least two weeks. The vibration coaxes the stubborn pupae into hatching, which exposes them to your treatments. Seal the contents in a bag and put it in the outside bin straight away.
Use an Insect Growth Regulator (IGR): Treat the house with an indoor flea spray or fogger that contains an IGR such as methoprene. The IGR is the part that counts: it stops eggs and larvae from growing into adults, which is how you break the life cycle.

Recommended Flea Treatment Tools

Medicated flea shampoo: Your first move on the dog. It kills the adult fleas in the coat right now and takes the edge off the itching.

Metal flea comb for removing fleas from dogs.

Fine-toothed flea comb: After the bath, a metal flea comb lets you drag out the fleas, eggs and flea dirt the shampoo missed.

Pet-safe indoor flea spray for carpets and furniture.

Pet-safe home spray (with IGR): This is how you hit the house. Pick one with an IGR (Insect Growth Regulator) so the eggs and larvae never reach adulthood.

Step 3: Treat the Yard So Fleas Don’t Come Back

Fleas live in the yard too, and your dog picks them straight back up every time it heads out. Knock the outdoor population down so your indoor work doesn’t go to waste.

Clear the debris: Mow the lawn short and rake up leaves and clippings. Sunlight is one of the few things flea larvae can’t survive.
Hit the hot spots: Focus on the shady, damp corners where fleas breed and your dog likes to lie, under decks, porches and thick bushes.

Step 4: Stop Fleas Coming Back for Good

Because the pupal stage is so stubborn, fully breaking the cycle can take up to three months. The one habit that locks in long-term control is simple: keep every pet in the house on a year-round, vet-approved flea preventative, no gaps.

How to Get Rid of Fleas: FAQ

Q: Why treat the house if the fleas are on my dog?
A: The adult fleas on your dog are only about 5% of the problem. The other 95%, the eggs, larvae and pupae, are sitting in your carpet, bedding and furniture. Treat only the dog and those keep hatching and reinfesting it, so the cycle never stops.

Q: I’ve treated my dog but I’m still seeing fleas. Why?
A: That’s normal for the first few weeks. New fleas keep hatching from pupae that were already in your home. As long as your dog is on a good preventative, each new flea dies fast, before it can lay eggs, and that’s what finally breaks the cycle.

Q: Do I need a flea bomb if I vacuum a lot?
A: For a light case, regular vacuuming might get you there. For anything moderate or worse, a spray or bomb with an Insect Growth Regulator (IGR) is the surer bet, because it kills the eggs and larvae that vacuuming leaves behind.

Q: How long does it take to get rid of a flea infestation?
A: Plan on up to three months. Flea pupae can lie dormant for weeks, so it takes consistent treatment of both your dog and your home over that window to clear a heavy infestation for good.