Cats Fleas

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Browse through a selection of user-submitted questions. Maybe they'll help you with one of our products or with general pet care!

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Questions about Cats Fleas

  • How long does it take for flea collars to become active?
  • Several days are needed for the insecticide to spread over the entire body surface. Once that is done, it does not matter which part of the body the insect decides to feed on; it will be killed by the active ingredient.

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