PetLock Plus Flea & Tick Protection for Dogs (3 Dose)


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PetLock Plus is an easy to use, waterproof, monthly spot-on solution to control fleas, ticks and chewing lice. PetLock Plus starts working immediately upon application.

  • Kills fleas, flea eggs and flea larvae
  • Kills chewing lice and ticks
  • Fast acting and long-lasting
  • Do not use on cats

PetLock Plus is Formulated with the Same Active Ingredients as Frontline® Plus *

  • FIPRONIL 9.8%          
  • (S)-Methoprene 8.8%

Application Tips


PetLock Plus is effective for up to three months, but for best results, apply PetLock Plus for Dogs once a month. This will kill the fleas and destroy the eggs and larvae that can develop quickly into adult fleas, in those high risk re-infestation areas. Because flea eggs and pupae can survive for some time outside a host, it is important to treat your environment properly to completely eradicate these pests once they have infested your pet and home.


To control ticks, monthly application of PetLock Plus for Dogs is just as critical. This will aid in killing the larva, nymph, and adult ticks that may transmit various diseases including; Lyme disease, Rocky Mountain Spotted Fever, ehrlichiosis, babesiosis, and anaplasmosis for at least one month. Monthly application will ensure the best results.

Chewing Lice

For best control of chewing lice, apply PetLock Plus once every month.

Sarcoptic Mites

Sarcoptic mange mite infestations can be controlled with the monthly application of PetLock Plus. Make sure you mark your calendar or set up an alert on your smart phone to remind you when the next dose of PetLock Plus needs to be applied. Do not reapply PetLock™ Plus sooner than 30 days after previous application.

Apply PetLock Plus every 30 days.




Additional information



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