Breaking the flea life cycle

Ciclo de vida da pulga

If you’ve had a flea infestation in your home, you’ll never want to have one again. To stop repeat infestations, you need to break the flea life cycle once and for all, for a successful attempt at getting rid of fleas.

It’s a sobering thought that for every flea on your dog or cat, there are probably at least nine more in your home. Adult fleas lay eggs which hatch into larvae and get everywhere—in carpets, between floorboards, in upholstery and in your pet’s bedding.

So you might think you’ve accomplished getting rid of fleas, only to find a new generation emerging days to weeks after you’ve started treating your pet. This can be triggered by a change in temperature, for instance when you turn the central heating up.

To avoid such a nasty surprise, veterinary professional organisations recommend using spot-on flea products monthly, all year-round to break the flea life cycle. This not only kills adult fleas and immature fleas in your pet’s immediate surroundings, but also makes sure that any newly hatched adult fleas that jump onto your pet won’t last long.

Treat every pet in your household at the same time to make sure you tackle this problem effectively. Talk to your veterinarian about the best products to use for flea control for all animals in your household.

Targeting the fleas’ hideouts

To reduce the number of flea eggs, larvae and pupae in your home:

  • Wash all your pet’s bedding at a high temperature.
  • Vacuum your carpets and furniture to remove eggs, larvae and pupae and discard the vacuum cleaner bag.

By targeting all the hideouts at once, you help break the life cycle and keep your pet and your house flea-free.

Adult Eggs Larvae Pupa


  • Starts feeding within 5 minutes.
  • Females can ingest 15 times their body weight in blood.
  • Mate 4 to 48 hours after feeding.
  • Prefer to stay on host animal for life.


  • Large numbers of eggs (e.g. 40 to 50) laid every day.
  • Fall off pet onto floor and furnishings.
  • Hatch as larvae in as little as 1 to 10 days.
  • 25 to 30% develop into adult fleas.


  • Thrive in warm, humid conditions.
  • Hide deep in rugs and other furnishings and between floorboards.
  • Feed on adult flea droppings (flea dirt) and other organic material such as skin debris that falls from dogs and cats.
  • Molt twice then weave cocoons where they develop into pupae.


  • Develop (metamorphose) into adults inside tiny cocoons.
  • Pupae can stay dormant for long periods inside these cocoons.
  • Quite resistant to temperature, drying and insecticides.
  • Emerge in response to heat, CO2 and movement.

Check list

  • Apply Activyl® to dogs and cats

  • Clean the house thoroughly on the
    same day.

  • Wash pet’s bedding at a high temperature.

  • Vacuum carpets and furniture and discard vacuum cleaner bag.