Examining the flea lifecycle on cats

Within seconds of landing on your cat, fleas start to feed. Then, 24 hours after their first blood meal, female fleas begin to lay eggs, reaching a staggering rate of 40-50 eggs per day.1 In the blink of an eye, your cat and your home are infested with fleas.

Rest easy. Cheristin® for cats (spinetoram) kills fleas before they can lay eggs, stopping the infestation in its tracks. It’s comfort both you and your cat can count on.

The Flea Lifecycle. Adult fleas lay eggs within 24-36 hours. The eggs hatch within 1-10 days. After 5-10 days, the flea larvae form a cocoon and transform into flea pupae within 5 days or may be dormant for months. Flea Lifecycle Legend. Actual size of flea eggs are 0.5 millimeter. Flea larvae are 2-5 millimeters. Flea pupae are 5 millimeters. Adult fleas are 2-4 millimeters.

Fleas hide everywhere.
Protect your cat.

Because fleas are so common and multiply so quickly, there are many ways your cat can come into contact with them:

  • Flea eggs on a dog or cat can fall onto bedding and other areas of your home, quickly infesting other pets.
  • Eggs can drop to the carpet and mature into larvae that hide in the carpet pile. Larvae turn into pupae which can remain dormant in a cocoon for months, only to later hatch and re-infest your pet and home.
  • Wildlife and outdoor domestic animals can drop flea eggs around your home. Newly hatched fleas can hop onto your cat.

To control fleas, routinely treat all pets inside and outside the home with an approved flea control product. Learn more about how Cheristin starts killing fleas within 30 minutes of administration on cats and kittens 8 weeks of age and older that weigh 1.8 pounds or greater, and how Cheristin kills 98-100% of fleas in 12 hours.2

Learn about the health risks associated with fleas