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Why is my dog still itchy and has fleas despite Advantix treatment?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered | 20 lbs

My dog gets monthly advantix flea treatment but today we found a flea on him! I even made a post yesterday because he was itchy near his anus but i didnt think it could be a flea due to the fact he has treatment! Is advantix not good? Could he be itchy due to that flea?

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on May 26th, 2019

If you’re noticing increased itching in that area and you found a flea, you may try switching the flea prevention to see if that helps. Fleas can become immune to products. The top products on the market are oral products such as Nexgard and Simparica. Most pets can use these products but you should talk with your veterinarian before switching. They are administered once a month and at this point appear to work very well. If the itching goes away, then you know it was related to flea bites. Best of luck.

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