Sentry FiproGuard Flea & Tick Spot Treatment for Dogs, 23-44 lbs, 3 Doses (3-mos. supply)

$9.74 First Time Autoship Price
this order
Save 35% (up to $20) today when you set up Autoship. 

$14.24 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Get deliveries on your schedule
  • Skip, change, or cancel anytime
$14.99 Chewy Price
($5.00 /ea)
Save $11.00 (-42%)
$25.99 List Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME

In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns

No interest if paid in full in 6 months on PayPal purchases of $149+. .

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

Size

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

4 Customer Questions


Is this product safe on pregnant dogs

Answer by ChewyAug 31, 2019
It's recommended to consult with your vet if your pet is pregnant or nursing to determine if this flea and tick treatment is suitable to be used.

Do you use this monthly, or qrt etc-don’t see this.

Answer by ChewyJan 09, 2019
At this time, it's not recommended to apply this treatment more than once every 4 weeks.

Does this product kill the eggs & larvae<

Answer by ChewyOct 15, 2018
This treatment kills fleas, ticks, eggs, larva, and chewing lice.

Does it make dogs itch

Answer by ChewyDec 15, 2017
Typically a dog will be itchy due to mite marks. However, some dogs can be sensitive to certain ingredients and can have a reaction. Should a reaction happen, we always encourage pet parents to consult with a veterinarian.
3.9
Rated 3.9 out of 5 stars
155 Ratings

98 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By FRANCINE on Sep 25, 2025

Price

Chewy always delivers exactly what I order.

Chewy always delivers exactly what I order.


Rated 5 out of 5 stars
By Chalz on Jun 25, 2025

Easy to find and order.

To lazy to make the trip to the store which might or might not have it in stock.

To lazy to make the trip to the store which might or might not have it in stock.


Rated 5 out of 5 stars
By Vance on May 24, 2025

Extremely effective!

I have been fighting fleas on 4 dogs for 5 Year's and this product killed them in 10 hours!

I have been fighting fleas on 4 dogs for 5 Year's and this product killed them in 10 hours!


Rated 5 out of 5 stars
By Sandra on Jun 25, 2025

It helped with fleas

I got this for my friend and he said he was really happy with it

I got this for my friend and he said he was really happy with it


Rated 5 out of 5 stars
By Connie on May 2, 2025

Good value

I don't know if it works yet since it's only been a week since I put it on my dogs.

I don't know if it works yet since it's only been a week since I put it on my dogs.


Rated 5 out of 5 stars
By shari on Mar 17, 2025

Ease of use

Cost effective..works well...have used for several years...no side wffects...no issues with fleas or ticks

Cost effective..works well...have used for several years...no side wffects...no issues with fleas or ticks


Rated 5 out of 5 stars
By Carol on Feb 17, 2025

Works well

Used it for years. Very happy with it And very pleased with chewy as well. Very fast delivery. Thanks chewy

Used it for years. Very happy with it And very pleased with chewy as well. Very fast delivery. Thanks chewy


Rated 5 out of 5 stars
By Christina on Mar 28, 2025

Used before

Won't change to any other brand will stay on this one

Won't change to any other brand will stay on this one


Rated 1 out of 5 stars
By Megan on Dec 12, 2024

No

Unfortunately this product just isn't up to par. Get ongaurd.

Unfortunately this product just isn't up to par. Get ongaurd.


Rated 1 out of 5 stars
By Jessica on May 31, 2024

Did not work. Lower dose caused smaller dog seizures.

Idk about the quality control of these drops. The ones in this weight did not kill the fleas, she is scratched to bits. The lower weight one used on my smaller dog

Idk about the quality control of these drops. The ones in this weight did not kill the fleas, she is scratched to bits. The lower weight one used on my smaller dog caused seizures. Would not waste your money.