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Found one flea on my cat. Do I need to treat all pets and my home?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 8 lbs

We just found one solitary flea on one of our 4 cats but can't find any more and on of the cats has been scratching herself for weeks. She has very dry skin also but we haven't found any other evidence of fleas. Is it possible there was just one or should we immediately start treatment.

3 Answers

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on March 3rd, 2018

Fleas tend to live in the environment (your house, the garden, etc.) and will hop onto a cat or dog only when they are hungry, in order to bite. Once the flea has eaten, it will hop off again. For every flea you find on your animal, there may be 100 fleas in its surroundings! You will need to do thee following: So you need to treat all your pets as well as the environment (which contains the fleas, their eggs and larvae). . Flea treatment:  1) Get some flea medication such as a Flea spray or a spot on from a pet shop or your veterinarian and apply monthly 2) get flea powder, put some in your vacuum cleaner bag and hoover your house and furniture and also non-carpeted areas frequently to remove flea larvae and eggs which live off house dust., Dispose of the bag in the rubbish bin outside. Hot-wash all the pet's bedding, If you do this diligently for a few months you will get rid of the fleas. Flea products: Spot-ons: Many, if not all of those are only available from your vet. Advantage, Advantix Advantage Multi (Advocate in the UK) Frontline (ticks as well) Bravecto spot on (ticks as well) - for cats, in tablet form for dogs Stronghold Tablets: comfortis (will only kill fleas once) Collar: Seresto (ticks as well) House spray: Indoorex

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Other Answers

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    Answered By Maria DVM

    Veterinarian

    Published on

    I recommend immediately starting treating on all cats. Cats groom a lot so you may only see one flea and sometimes you won't see any fleas or evidence of fleas. Ramona can be so allergic to fleas that one flea can cause her to scratch a lot. Thank you for using Petco Pet Education Center, formerly Petcoach.

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    1Pet Parents found this answer helpful

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    Answered By Andrea M. Brodie, DVM

    Veterinarian

    Published on August 24th, 2018

    No, there is no need to quarantine her. Unfortunately fleas only hop on the body of your pet when they want to feed, then they hop off again and stay in your pet's environment. So you need to treat all pets in the household as well as the environment (which contains the fleas, their eggs and larvae). Flea treatment:  1) Get some flea medication such as a Flea spray or a spot on from a pet shop or your veterinarian and apply monthly (advantagee 2 is very good) 2) get flea powder, put some in your vacuum cleaner bag and vacuum your house and furniture and also non-carpeted areas frequently to remove flea larvae and eggs which live off house dust., Dispose of the bag in the trash outside. Hot-wash all the pet's bedding, If you do this diligently for a few months you will get rid of the fleas.

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