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Deal.ai › PetArmor › Dog Flea and Tick
PetArmor
PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs

PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs

4.1(3,219 ratings)

Best price now

$31.99at Blain's Farm & FleetChecked 4 h ago

Compared across 6 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Best price today: $31.99 at Blain's Farm & Fleet (checked Nov 11, 2026).
  • Checked at 6 stores.

Our take on the PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs

PetArmor CapAction is an over-the-counter oral flea tablet for small dogs and puppies. Each tablet contains nitenpyram, the same active ingredient as Capstar, and starts killing adult fleas within about 30 minutes, reaching over 90% kill within four hours. It is a short-acting knockdown pill, not a monthly preventive, so it suits dogs that need fast relief while a longer-term flea control plan takes effect. It is cheaper than a vet visit and easier than topical treatments, but it does nothing for ticks, eggs or larvae, and fleas can return within a day if the environment is not treated.

Best forSmall dogs and puppies from 4 weeks oldFast knockdown of a sudden flea infestationOwners who prefer a pill over topical dropsPregnant or breeding dogs, per the label
Pros
  • Starts killing adult fleas in about 30 minutes
  • Over 90% flea kill within four hours
  • Oral tablet, no mess or residue on the coat
  • Same active ingredient as Capstar
  • Labeled safe for pregnant and breeding dogs
Cons
  • Kills only adult fleas, no eggs or larvae
  • No lasting protection; fleas can return within 24 hours
  • Does not treat ticks
  • Dosing depends on accurate weight, so a scale matters
  • Some dogs vomit or drool after taking it

PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs prices at every store

  • Blain's Farm & FleetNew

    In stock

    $31.99Checked 4 h ago
    Visit Blain's Farm & Fleet
  • HerbsproNew

    In stock

    $33.99Checked 4 h ago
    Visit Herbspro
  • ChewyNew

    In stock

    $31.48+ $4.95 shippingChecked 4 h ago
    Visit Chewy
  • WalmartNew

    In stock

    $31.48+ $6.99 shippingChecked 4 h ago
    Visit Walmart
  • Tractor Supply CoNew

    In stock

    $35.99+ $13.99 shippingChecked 4 h ago
    Visit Tractor Supply Co
  • PetsmartNew

    Out of stock

    $31.49+ $5.99 shippingChecked 4 h ago
    Visit Petsmart

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission. Some prices via Klarna.

PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs price history

Lowest price we've seen: $31.48 on Nov 11 at Walmart. Tracked across 6 stores since Nov 11.

What reviewers say

  • 4.1 / 53,219 ratings

Owners rate it around 4.1 out of 5 and mostly praise how quickly fleas drop off after dosing. Complaints center on short duration, vomiting in sensitive dogs and fleas coming back when the home is not treated.

What people mention
  • SpeedPraisedOwners report fleas dropping off within 30 minutes to a few hours of dosing.
  • DurationCriticisedReviewers note the effect fades within about 24 hours and fleas can return.
  • Stomach upsetMixedSome dogs vomit or drool after the tablet, while most keep it down fine.
  • ValuePraisedBuyers see it as a low-cost way to get quick relief without a vet visit.
  • EnvironmentCriticisedOwners say fleas come back unless bedding, carpets and other pets are also treated.

About the PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs

PETARMOR CAPACTION is an oral flea treatment for small to medium-size dogs. Each tablet contains nitenpyram, the same active ingredient as CAPSTAR. It is given by mouth, so there is no messy topical application.

The tablet works from the inside out. It starts killing adult fleas within 30 minutes and reaches greater than 90% effectiveness against adult fleas on the dog within four hours.

It is an over-the-counter product for dogs 4 weeks of age and older that weigh 2 to 25 pounds. It is safe for pregnant or breeding dogs.

Active ingredient
Nitenpyram
Form
Oral tablet
Dog size
Small to medium, 2 to 25 pounds
Minimum age
4 weeks
Onset
Starts killing adult fleas within 30 minutes
Effectiveness
Greater than 90% against adult fleas within four hours
Pack count
6 packs
Safe for
Pregnant or breeding dogs

Specifications

number_of_pieces
6Source
color
MulticolorSource
size
Small DogSource
Food Type
SupplementsSource
Dog Size

Questions and answers

How fast does it work?
It starts killing adult fleas within about 30 minutes and reaches over 90% kill within four hours. It is meant for fast knockdown, not long-term control.
How is it different from Capstar?
Both use nitenpyram at the same strength. CapAction is the store-brand version, so the main difference is the label and the pack size.
How often can I give it?
The label allows repeat dosing when fleas reappear, but check with your vet for a schedule. It does not replace a monthly preventive.
Does it kill ticks or flea eggs?
No. It kills adult fleas only. Use a tick product and treat the home for eggs and larvae.
Which dogs can take it?
Dogs 4 weeks and older weighing 2 to 25 pounds, including pregnant and breeding dogs per the label. Weigh your dog carefully before dosing.
What is in the box?
Six tablets for small dogs. Give one tablet by mouth or hidden in food.
Where is the PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs cheapest?
At Blain's Farm & Fleet, for $31.99, as of our latest check.
What do buyers say about the PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs?
Rated 4.1 out of 5 from 3,219 ratings.
Where can I buy the PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs?
6 stores we checked sell it, including Walmart, Chewy, Petsmart, Blain's Farm & Fleet, Herbspro.

Stores we've priced the PETARMOR CAPACTION Fast-Acting Oral Flea Treatment for Small Dogs at

  • Blain's Farm & Fleet deals and prices
  • Walmart deals and prices

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Mini (1-10kg)
Source
No. of Packs (pack)
6Source
Age Group
AdultSource
Supplements
Fur & SkinSource