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Question:

Cats - repeating flea treatment w/different topical?

I’m in a bit of a dilemma and really need some advice. I have two cats, Oliver and Luna, and I recently treated them both with a topical flea treatment. However, it seems like the pesky little critters are still hanging around. I’m really worried because I can see they’re uncomfortable, and it breaks my heart to see them scratching all the time. Plus, I've noticed a couple of live fleas still scurrying through their fur. I’m wondering if it’s safe to use a different brand of topical treatment so soon after the first one, or if that could be harmful? Has anyone else dealt with this before? I just want to help my fur babies feel better and get rid of these fleas for good. Any advice or experiences would be super helpful!

Answer:

Hi there! I understand your concern about treating your kitty again with a different topical flea treatment. It's important to approach this carefully for your cat's health and safety.



Switching flea treatments can sometimes be necessary, especially if the current treatment isn't effective. Flea resistance, an incorrect application, or an overwhelming infestation can sometimes be the culprits. However, using multiple treatments too close together can be risky. Some active ingredients may react adversely with each other, potentially harming your cat.



If you're considering switching products, it's crucial to wait at least a month between applications to avoid overlapping chemicals. During this time, you can focus on environmental control—vacuum regularly, wash your cat's bedding, and possibly use a premises spray for areas your cat frequents.



Keep an eye out for any signs of irritation, such as excessive licking, redness, or hair loss at the site of application. Watch for systemic signs like lethargy, vomiting, or tremors, which could indicate a more serious reaction.



If you suspect your current treatment isn't working or you want advice on how to proceed safely, it's a good idea to have a consult. Booking a video consult with one of our vets at Dial A Vet is an excellent way to get personalized guidance. Your kitty deserves the best care, and we're here to help!

Answered by

Louise - Senior Veterinary Nurse, Dial A Vet

June 21, 2025

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The "Ask a Vet" forum on Dial A Vet offers general information and helpful tips on pet health, but it's not a substitute for professional veterinary care. The advice here doesn't create a veterinarian-client-patient relationship, and our vets can't diagnose or treat your pet remotely. For emergencies or specific medical concerns, always contact your local veterinarian immediately. Your pet's health is unique, and decisions should only be made after consulting with a qualified professional. By using this forum, you acknowledge these limitations and agree to seek in-person veterinary advice for all your pet's health needs. View our content guidelines.
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