SENTRY PurrScriptions Flea & Tick Spot Treatment for Cats, over 6 lbs, 3 Doses (3-mos. supply) -

Sentry PurrScriptions Flea & Tick Spot Treatment for Cats, over 6 lbs

By Sentry
Rated 2.7026 out of 5 stars
Pet Weight

$8.79Chewy Price
$17.49Chewy Price
$8.35Autoship Price
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About This Item


  • Provides 5 way protection from fleas, deer ticks, flea eggs, larvae and mosquitoes.
  • Effective for up to one month.
  • Kills flea egg and larvae for up to three months.
  • For cats and kittens that weigh over 5 lbs.
  • Quick drying formula.

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Play Video: Learn More About Sentry From Our Team of Experts
Learn More About Sentry From Our Team of Experts

Important Information

Fleas rise to the top of your pet's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet. If you’re still seeing fleas after application, it may be because your pet has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. It may take up to 30 days to break the entire flea life cycle. Additionally, you should also treat sources of new fleas (i.e., carpet, yard, etc.) to ensure complete flea control.

Questions & Answers

14 Customer Questions

Does the flea have to bite my cat to die? How does this product work
Answer by ChewySep 01, 2017
This product does not require the flea to actually penetrate your pet's skin in order for the product to take effect, but it will take up to 24 hours to work after applying the solution.

I applied sentry plus on my cats 2 days ago and I’m still seeing live fleas what do I do?
Answer by ChewyAug 09, 2018
It's recommended to also treat your home and yard while you're treating your cat to prevent reinfestation.

If a give my cat a bath on the 3 day after application, will it still be effective or do I need to reapply?
Answer by ChewyOct 07, 2017
After the first 24 hours of application pets can be bathed. Do not apply more often than once every 30 days.

What's the difference between this product and the Sentry plus?
Answer by ChewyMar 23, 2019
The Sentry PurrScription Plus targets fleas,deer ticks, flea eggs and flea larvae while the Sentry PurrScription only targets fleas and deer ticks.

ReviewsWrite a Review

Rated 2.7026 out of 5 stars
195 Reviews
Would recommend to a friend

195 Customer Reviews

Filter by reviews that mention

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 1 out of 5 stars
By jenn on Feb 23, 2023

This doesnt work

We adopted the cat from shelter and realize he has flea so we got this for the cat , it doesntwork , we bring him to vet a week after , vet told us cat still have flea and the neck on the cat where we apply treatment is red ! I wont try this brand anymore ! First time cat mom got super upset with the product .please dont try it !

Rated 1 out of 5 stars
By Princess on Feb 9, 2023


This gave my cat a chemical burn around 4 days after application. Apparently this happens to a lot of cats with this brand. I'm not sure why this is still on chewy.

Rated 5 out of 5 stars
By Lisa on Jan 21, 2023


product works great on our feral cat Good price and easy to apply

Rated 2 out of 5 stars
By flutterby on Jul 13, 2022


My cat is 2 years old she is an indoor cat and got fleas someone must have brought them in from outside I've given her two treatments already and she still flooded with fleas so I'm trying to use hot water with Dawn and the flea comb and I do it every single day I'm really bummed because I'm on disability insurance monthly and I can't really afford anything else above the price that I paid for this my cat is definitely worth it but I just cannot afford anything higher so I'm really disappointed

Rated 5 out of 5 stars
By deedee on Aug 4, 2022

Great product

Our cat slipped out of the house and was gone for 19 days before we trapped him. He was loaded with ticks, fleas, their eggs, and Lord only knows what else. Less than 24 hours after we applied this product, we could see a BIG difference. He's been free and clear for 2 weeks now. Price was reasonable, and delivery was very quick!

Rated 2 out of 5 stars
By kl26 on Jul 24, 2022

Works but Itchy

Bought for 4 indoor cats. My cat with white fur seems to get a few flea-like bugs a times. So I put it on all cats (nape of the neck). I didn't see any more flea-like bugs but they scratched their fur out like crazy. I had to wipe it off when one of my cats couldn't stop scratching and seemed to be having a bad reaction to it. I wouldnt get it for my cats again,

Rated 1 out of 5 stars
By Bobo on Nov 21, 2022

Burned kitty's skin

This product made red sores on my cat's neck. Also, bad scent.

Rated 1 out of 5 stars
By Monica on Nov 2, 2022

You get what you pay for.

Doesn't work at all but it does remove the hair in the area you apply it.

Rated 1 out of 5 stars
By CatHaus on May 6, 2022

Horrible Product!

This product is horrible! We have 2 cats that we applied it to. As they are cats, applying flea treatment is not the most exciting thing to do in our house, but we usually get over it after a few hours. However, both seemed irritated more than normal the past few days. It’s been 3 days since application and the application site is really itchy, and their fur is still oily. One reason I purchased this one is because it states “Quick Drying”, it definitely isn't. The worst thing is that our one cat is having a bad reaction to it. At the application site, he has hair loss and I actually think it burned his skin! He’s not sensitive to any other flea treatment so, I didn’t think that this one would cause him problems. I already put the remaining product in the trash, I would not recommend this to anyone.

Rated 1 out of 5 stars
By Chelle on Apr 24, 2022

Horrible reaction on both on my cats

This products literally made both the f my cats have horrible reactions and both lost their fur not even in 24 hours my male cat has multiple open sores on his neck now and my female won’t let anyone touch her back or neck. I’ve never had an issue with any other flea serum. I’ll never put this on my cats again.