No, Frontline only kills adult fleas because they are the only stage of the flea life cycle that is able to make the journey to your pet’s skin where it comes in contact with the pesticide that will kill it.
The flea eggs, larva, and pupa which make up 95% of the entire flea infestation, will continue to develop and hatch into adults.
Because of this, it will most likely take several weeks or even months for the entire flea population in your home to be completely eradicated. In the meantime, you should see flea activity decreased dramatically over time but you will still see more adult fleas appear on your pet from time to time.
Your pet acts as a sort of flea vacuum cleaner as the flea pupa hatch from their cocoon and are attracted to your dog or cat in order to obtain a blood meal. After making contact with an animal that has been treated with Frontline, the adult fleas will die within 12 hours.
There are other flea control products that do have the ability to kill flea eggs and larva such as flea powders and flea spray, so you may utilize those products in conjunction with Frontline if you so desire.
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