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Hartz and Advantage.

Species: Cat
Breed: CALICO
Age: 1-2 years
I gave my cat Hartz one spot flea treatment and it doesnt work grrrr, i gave it on the 4th of May and is spose to last 1 month, I want to buy a more expensive spot treatment that works what i want to know is if i put this on before the hartz 1 month is up will this harm her ???


Online vet, Dr. Marie

Dr. Marie replied:

In my opinion most over the counter flea treatments like Hartz are completely useless. I get really frustrated that they can sell products like this!

The good news is that if you get a good product like Advantage, Revolution, Frontline or Comfortis you are fine to go ahead and start using it right away.

Here is some more information on fleas for you.

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Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

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Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.