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About Fleas

Fleas feed on the blood of their hosts and they reproduce quickly. An adult female flea will lay eggs on their host (your cat). These eggs will likely fall off of the cat and become larvae within 2-14 days. The larvae like to stay in dark places and depending upon how much food they are able to get, these larvae will complete development within 5-10 days and transform into pupae from which an adult flea emerges, looking for food. The entire process can take anywhere from 2 weeks to 6 months.

How Your Cat Can Get Fleas

  • Fleas like to hide in dark places outside. They can jump very high and can hop onto anything that walks by, such as a dog, cat or even you. You may unknowingly bring fleas into your house. Fleas can also make their way inside your house through an open window or crack in the door.
  • Since cats like to groom themselves, you may not notice the fleas on your cat because she may have ingested them.
  • The fleas can spread fast, so it is important to kill them as quickly as you can.

How Fleas Impact Your Cat

  • Fleas can deplete your cat’s blood supply and this can be especially dangerous in young kittens.
  • As the flea feeds on the blood, the process creates a systemic reaction that can cause itching.
  • Fleas can also cause tapeworm.

Catego® Protects

Protects against multiple stages of the flea life cycle.

Contains pyriproxyfen, an insect growth regulator to prevent the development of immature fleas.

Kills fleas within 6 hours and on day of application, 97% efficacy within 3 hours4.

Prevents flea re-infestations.


1. Catego® for Cats EPA Label.
2. Frontline Plus® website. Accessed September 9, 2016.
3. Advatage® II website. Accessed September 9, 2016.
4. Data on file.

Frontline Plus® is a registered trademark of Merial.
Advantage® is a registered trademark of Bayer.

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