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Is Hartz flea & tick safe for my cat if she might be pregnant?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed | 1 year and 11 months old | 20 lbs

Is Hertz ultraguard topical flea and tick prevention for cats and kittens safe for a pregnant cat? I am not positive that she is pregnant. There is a good possibility she is. I need to know if this product is safe.

2 Answers

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on September 19th, 2018

It is not recommended to use Hartz® UltraGuard® brand flea and tick products on pregnant cats (or dogs). You can, however, use a product called Frontline spray on your pregnant cat. Unfortunately fleas only hop on the body of your pet when they want to feed, then they hop off again and stay in your pet's environment. So you need to treat all pets in the household as well as the environment (which contains the fleas, their eggs and larvae). Flea treatment:  1) Get some flea medication such as a Flea spray or a spot on from a pet shop or your veterinarian and apply monthly (in your case: Frontline spray) 2) get flea powder, put some in your vacuum cleaner bag and vacuum your house and furniture and also non-carpeted areas frequently to remove flea larvae and eggs which live off house dust., Dispose of the bag in the trash outside. Hot-wash all the pet's bedding, If you do this diligently for a few months you will get rid of the fleas.

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Other Answers

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    Answered By Sara Farmer, DVM

    Veterinarian

    Published on

    I can’t find any specific information for pregnant animals on the product website. I would recommend using another product that has been deemed safe for pregnant and nursing animals such as Frontline Plus.

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