Sentry FiproGuard Flea & Tick Spot Treatment for Dogs, 45-88 lbs, 6 Doses (6-mos. supply)

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About This Item

Details

  • The active ingredient is Fipronil, a powerful chemical used in leading tick medications.
  • Treatment kills adult fleas and ticks and protects against chewing lice.
  • Use on your favorite puppy eight weeks and older.
  • Stop the flea life cycle and kill flea eggs and flea larvae for up to 12 weeks.
  • Apply this treatment for relief that is fast acting, long-lasting, and waterproof.

Ingredients

Instructions

FAQ

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

13 Customer Questions


Will this still work if you bathe the dog after? Or go swimming?

Answer by ChewyJun 19, 2017
After allowing the treatment to be absorbed for 24 hours, you will be able to bathe your dog, or allow them to go swimming.

How does it work is it absorbed into the skin

Answer by ChewyMay 01, 2019
This product is dispersed over the pet's body by the natural oils on their skin and attaches to the hair follicle. This process can take up to 24 hours.

Does this work to prevent ticks or does it only work to kill a tick after it bites?

Answer by ChewyMar 07, 2018
This product kills and prevents ticks.

I have a dog that's 32 lbs. And one who's 61 lbs. Would it be okay to apply this to the 31 lb dog instead of having to buy two separate applications?

Answer by ChewySep 17, 2018
This treatment is formulated for specific weight ranges. It is important to use this treatment as directed, for the weight listed. Otherwise, it is possible to overdose or under-dose your pet.

4.0
Rated 4 out of 5 stars
356 Ratings

249 Customer Reviews



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 Keith on Nov 18, 2025

DOES NOT WORK anymore.

Last three times I've purchased this, it's not working anymore. My poor dog is covered in flea bites and fleas. Refund my money and give me a suggestion as to what

Last three times I've purchased this, it's not working anymore. My poor dog is covered in flea bites and fleas. Refund my money and give me a suggestion as to what REALLY works.


Rated 5 out of 5 stars
By Lesa on Nov 5, 2025

Great product at a reasonable price.

I’ve used Sentry for years and haven’t had any problems or issues. I also use it on our cats.

I’ve used Sentry for years and haven’t had any problems or issues. I also use it on our cats.


Rated 5 out of 5 stars
By Roberta on Nov 25, 2025

Pleased

It arrived timely

It arrived timely


Rated 5 out of 5 stars
By Tiffany on Aug 26, 2025

Fast delivery

Best price I could find!

Best price I could find!


Rated 3 out of 5 stars
By Anthony on Dec 17, 2024

Tiefah's missing gift!

This is Exactly !! Why I hate when things are shipped separately!! She never got her Kong!!! Toy it clearly shows on her Christmas order it did not appear !! I'm

This is Exactly !! Why I hate when things are shipped separately!! She never got her Kong!!! Toy it clearly shows on her Christmas order it did not appear !! I'm so dam disappointed in chewy lately you need to send a receipt ( non existent) in box !!


Rated 2 out of 5 stars
By Jerica on Nov 29, 2024

Stopped working

I used this product for both of my dogs and it seemed like it was working but all of a sudden it is no longer effective. Both of my boys have live fleas and flea

I used this product for both of my dogs and it seemed like it was working but all of a sudden it is no longer effective. Both of my boys have live fleas and flea dirt on them despite monthly adherence. We live in South Carolina so maybe the fleas are resistant? I have a bunch of this product, but will be switching.


Rated 5 out of 5 stars
By Anne on Sep 18, 2024

Perfect for Hunting Dogs and Indoor Dogs

Our hunting dog trainer recommended this product. At the kennel, they use it on all of their dogs that are running through water, swamps, fields everything and they

Our hunting dog trainer recommended this product. At the kennel, they use it on all of their dogs that are running through water, swamps, fields everything and they have never had a tick or fleas. So I use it on my house, dogs as well and I’ve never had a problem.


Rated 1 out of 5 stars
By shatrice on Mar 16, 2025

Have to cut

I cut it too short so I couldn't use it

I cut it too short so I couldn't use it


Rated 5 out of 5 stars
By Eurie on Nov 24, 2024

Best topical

It's the best flea, tick, and lice topical that I've used

It's the best flea, tick, and lice topical that I've used


Rated 5 out of 5 stars
By Donald on Aug 1, 2024

Bear and Buster

They are 7th and 8th Huskies since we've been married, and Chrwey has always been there for us, great service, thank you.

They are 7th and 8th Huskies since we've been married, and Chrwey has always been there for us, great service, thank you.