How to Get Rid of Fleas Fast

It only takes one flea to start a flea infestation, and before you know it, your house is teaming with fleas. How did it happen so FAST?

Once in your home, a female flea can produce 40 to 50 eggs per day.1 They hatch, then the larvae turn into pupae, which are generally more immune to flea control products applied to your pet or his environment. Finally, adult fleas erupt out of their cocoon and quickly find a host, such as your dog or cat. Since these cocoons can be found almost anywhere, including your living room, it seems like fleas appear out of nowhere. Learn more about the flea life cycle.

How to Control Flea Infestations

For fleas in your home that may be in the egg, larva or pupa stages, you should:

  • CONSULT YOUR VETERINARIAN. He or she is the best source of information about flea control.
  • KILL FLEAS ON YOUR DOG OR CAT. Comfortis® (spinosad) starts killing fleas in 30 minutes, before they can lay eggs. Plus, Comfortis lasts a whole month—it can't be washed, rubbed or shaken off.
  • ELIMINATE FLEAS IN YOUR HOME. See killing fleas in your home for tips to rid your home of fleas. For severe environmental flea infestations, you may consider hiring a pest management specialist (exterminator). 
  • PREVENT FUTURE INFESTATIONS. Once-monthly Comfortis kills fleas before they can lay eggs, preventing future infestations. For comprehensive protection, be sure to treat all pets in the home. See other Elanco products for controlling fleas.

See our frequently asked questions for additional topics to discuss with your veterinarian.

View Our FAQs

Tips to free your home and pet from fleas 

Take a deep breath. You can rid your home of fleas and prevent future infestations. Simply follow these steps to help fight your infestation and to keep these tiny pests from coming back:


  • Launder bedding, blankets, pillows and throws.
  • Frequently vacuum areas where your pet sits and sleeps.
  • Consider hiring a professional cleaning company.


  • Treat all pets in your household with an approved flea medication such as Comfortis.
  • Administer approved monthly flea treatments year-round, or according to your veterinarian’s recommendations.

Download our step-by-step checklist with all the tips from this page to quickly eliminate your flea infestation.

How to Get Comfortis