How To Get Rid Of Fleas On Dogs?

How do you treat the dog?

Start with a veterinary-recommended flea treatment. Oral medications like NexGard or Bravecto kill fleas within hours and provide protection for one to three months. Topical treatments like Frontline or Advantage are applied to the skin between the shoulder blades. Flea shampoos and sprays kill existing fleas on contact but provide no lasting protection. A flea comb run through the coat catches live fleas and is useful for monitoring the infestation level. Avoid over-the-counter products with permethrin, which can be toxic to cats in the same household. Your vet can recommend the best product for your dog's size, age, and health status.

How do you treat the home?

Vacuum every carpet, rug, upholstered surface, and crevice in the house thoroughly, then immediately dispose of the vacuum bag or empty the canister outside. Wash all pet bedding, blankets, and removable covers in hot water. Apply a household flea spray containing an insect growth regulator (IGR) to carpets, furniture bases, and any areas where the dog rests. The IGR prevents flea eggs and larvae from developing into adults, breaking the lifecycle. Focus on areas under furniture and along baseboards where flea larvae concentrate. Repeat vacuuming daily for at least two weeks, as the vibration stimulates pupae to hatch, exposing them to the treatment.

Why do fleas keep coming back?

Flea pupae can survive in the home for months in a protective cocoon, waiting for vibration, warmth, or carbon dioxide to signal the presence of a host. A single flea can lay up to 50 eggs per day, and those eggs fall off the dog into your home environment. This is why reinfestation happens even after treating the dog: the home is a reservoir of developing fleas at various life stages. Consistent treatment of both the dog and the home, sustained over at least three months, is necessary to break the lifecycle completely. Stopping treatment early because the fleas appear to be gone allows surviving pupae to restart the cycle.

What ongoing prevention works best?

Year-round flea prevention is the most effective strategy. Monthly oral or topical flea preventatives keep the dog protected continuously, killing any new fleas before they can establish a population. Treat all pets in the household, not just the one showing symptoms; untreated pets serve as reservoirs for reinfestation. Continue vacuuming regularly even after the visible infestation clears. In warm climates, fleas are active year-round. In colder climates, indoor environments stay warm enough for fleas to survive through winter. Prevention is always cheaper than treating a full infestation.