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My dog's Frontline isn't working. Should I try a flea shampoo?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | spayed | 8 months and 7 days old

Safe to use flea shampoo after using frontline with no results

2 Answers

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on February 8th, 2016

Frontline doesn't always work unfortunately, but a flea shampoo is not likely to give you a better result. Instead I recommend using Advantage or Advocate spot on, Alternatively a comfortis tablet will do an excellent job as well. Do not bath her at least 3 days before and after you apply any spot on. As these flea treatment do not contain the same active ingredients as the frontline, they are safe to use at anytime you chose.

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28Pet Parents found this answer helpful

Other Answers

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    Answered By Angel Alvarado, LVT

    Licensed Veterinary Technician

    Published on

    Combining flea treatments can be risky. Frontline is very effective when used properly. Use the appropriate dose based on your dog's weight. Do not split doses between pets. It must be applied at least 3 days before or after a bath or grooming. It must be applied directly to the skin. This is accomplished by parting the fur with the applicator tip down to the skin. Treat ALL pets in the house for at least 3 consecutive months. The environment must also be treated. Vacuum all areas and dispose of the bag outdoors. Wash all fabrics and beddings that have had contact with any pet in the hottest water temp allowable. Knockout Area treatment (by Virbac) is just one very effective product to follow up with after vacuuming. Lastly, treat all pets for tapeworm since fleas carry the risk of tapeworm infection. If you purchased your Frontline from your vet, you can contact Merial at www.frontline.com and take advantage of their Guarantee.

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    18Pet Parents found this answer helpful

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