Is PetArmor the same as Frontline?

Both use fipronil as the active ingredient, and PetArmor lists 9.70% fipronil. Formulas and carriers differ, so results can vary, but the pest-killing ingredient is the same class.

How often do I apply it?

One dose every 30 days. This pack covers three months for one dog.

Can I use it on my cat?

No. It is for dogs only, and cats should not be allowed to lick the treated spot until it dries.

Does it kill flea eggs and larvae?

No. It targets adult fleas, ticks and chewing lice, so an indoor infestation may need vacuuming and possibly an insect growth regulator.

Yes, it is waterproof once dry, so normal bathing and swimming are fine after that.

When is the price lowest?

At $14.88 at Chewy.com as of November 4, 2026, it is the lowest of 4 stores. Flea season and subscription discounts are worth checking.

Where is the PetArmor Flea & Tick Treatment for Dogs cheapest?

At Chewy.com, for $11.32, as of our latest check.

What do buyers say about the PetArmor Flea & Tick Treatment for Dogs?

Rated 3.8 out of 5 from 1,400 ratings.

Where can I buy the PetArmor Flea & Tick Treatment for Dogs?

7 stores we checked sell it, including Chewy.com, Walmart, PetCareRx, Petco.com, eBay.

PetArmor Flea & Tick Treatment for Dogs

3.8

Best price now

$11.32at Chewy.comObserved at 5:33 AM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Chewy.com

PetArmor Flea & Tick Treatment for Dogs

3.8

Best price now

$11.32at Chewy.comObserved at 5:33 AM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Chewy.com

Ask our shopping agent

Our take on the PetArmor Flea & Tick Treatment for Dogs

PetArmor Flea & Tick Treatment for Dogs is a spot-on topical that uses 9.70% fipronil, the same active ingredient as Frontline, to kill adult fleas, ticks and chewing lice for up to 30 days per dose. This pack holds 3 monthly doses for dogs 45-88 lbs, and the formula is waterproof and fast-acting. At $14.88 at Chewy.com as of November 4, 2026, it is the lowest price among 4 stores selling it new and a cheap way to cover three months.

Best forOwners of medium-to-large dogs (45-88 lbs)Budget-minded flea and tick preventionMulti-month coverage with one purchaseDogs at least 8 weeks old

Pros

Fipronil 9.70% is the same active ingredient as Frontline
3 monthly doses for about $5 per month at the $14.88 price
Waterproof after drying, so swimming and bathing are fine
Kills adult fleas, ticks and chewing lice
Odor-free spot-on application

Cons

Kills adult fleas only, not eggs or larvae
Weight-banded: this pack is only for 45-88 lb dogs
Not for cats, and cats should be kept away from treated dogs until dry
Some dogs show skin irritation at the application site
Flea resistance to fipronil is reported in some areas

PetArmor Flea & Tick Treatment for Dogs prices at every store

Chewy.comNew
In stock
$11.32Observed at 5:33 AM
Visit store
WalmartNew
In stock
$11.32Observed at 5:33 AM
Visit store

Also available at

PetArmor Flea & Tick Treatment for Dogs price history

Lowest price we've seen: $11.32 on Nov 4 at Walmart. Tracked across 7 stores since Nov 4.

What reviewers say

With 3.8 out of 5 from about 1,400 ratings, reception is mixed. Many owners call it an affordable Frontline alternative that works, while others report fleas returning or skin reactions at the spot.

Pros

Noticeably cheaper than name-brand fipronil drops
Works for many owners within a day
Easy to apply and dries without much smell

Cons

Some report fleas surviving or coming back
Skin irritation or hair loss at the application site
Effectiveness seems to vary by dog and region

Specifications

Targeted Pests: Ticks, Chewing lice, Fleas
Active Ingredient: fipronil
Administration Method: Topical, Topical solution
Life Stage Age: All Lifestages, Adult, at least 8 weeks old
Treatment Frequency: Monthly
Dosage Concentration: 9.70% (Fipronil)
Dosage Duration: Up to 30 days
Formulation Type: Topical Solution, Spot-on
Formulation: Waterproof, Fast-acting
Lifecycle Targeted: Adult fleas
Animal Type: Dogs
Suitable For Health Status: Skin u0026 Coat Care, Skin Care
Treatment Type: Treatment
Supply Duration: 3 month supply
Supply Amount: 3 Doses
Weight Range: 45-88 lbs
Breed Restrictions: Do not use on cats
Contains: Fipronil
Free Of: Powder-Free
Package Type: Pack
Scent: Odor-Free

Questions and answers

Is PetArmor the same as Frontline?: Both use fipronil as the active ingredient, and PetArmor lists 9.70% fipronil. Formulas and carriers differ, so results can vary, but the pest-killing ingredient is the same class.
How often do I apply it?: One dose every 30 days. This pack covers three months for one dog.
Can I use it on my cat?: No. It is for dogs only, and cats should not be allowed to lick the treated spot until it dries.
Does it kill flea eggs and larvae?: No. It targets adult fleas, ticks and chewing lice, so an indoor infestation may need vacuuming and possibly an insect growth regulator.
Is it waterproof?: Yes, it is waterproof once dry, so normal bathing and swimming are fine after that.
When is the price lowest?: At $14.88 at Chewy.com as of November 4, 2026, it is the lowest of 4 stores. Flea season and subscription discounts are worth checking.
Where is the PetArmor Flea & Tick Treatment for Dogs cheapest?: At Chewy.com, for $11.32, as of our latest check.
What do buyers say about the PetArmor Flea & Tick Treatment for Dogs?: Rated 3.8 out of 5 from 1,400 ratings.
Where can I buy the PetArmor Flea & Tick Treatment for Dogs?: 7 stores we checked sell it, including Chewy.com, Walmart, PetCareRx, Petco.com, eBay.

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