Quote:
Originally Posted by Belmont Resident
I believe the way it works is the tick feeds off the animal, ingests the treated blood then dies and falls off. So if it feeds before laying eggs then it never happens as it dies pretty soon after feeding.
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From the Frontline web site...
2. How do FRONTLINE Top Spot and FRONTLINE Plus spread over a pet's body? How long does this take?
FRONTLINE Top Spot and Plus spread over the pet's body by a process called translocation. When applied, these products are gradually dispersed by the pet's natural oils, collecting in the oil glands in the skin. It is then "wicked" onto the hair over the next 30 days. The translocation process can take up to 24 hours to complete.
3. Do fleas and ticks have to bite my pet for FRONTLINE Brand Products to work?
Fleas and ticks do not have to bite your pet for FRONTLINE Brand Products to work. FRONTLINE Brand Products kill fleas and ticks if they simply come into contact with your pet's hair coat. The fleas will die within 18 hours of contact with your treated pet, and ticks will die within 48 hours.