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TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs

TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs

4· 656 ratings

Best price now

$26.95at eBayObserved at 5:09 AM

23% under what the other stores charge

Compared across 5 stores. Prices are checked against each store and labelled with when.

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Our take on the TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs

TevraPet FirstAct Plus is a monthly spot-on flea and tick treatment for dogs weighing 6 to 22 lbs. It pairs fipronil (9.8%) to kill adult fleas and ticks with (S)-methoprene (8.8%) to stop flea eggs and larvae from developing, and the formula is waterproof and odorless. Each box holds six doses, a six-month supply. At $14.77 at eBay as of November 4, 2026, it is the lowest of five new prices and among the cheapest per-dose options in this weight class.

Best forOwners of small dogs 6-22 lbsMulti-month flea and tick prevention on a budgetHouseholds that want an odorless, waterproof spot-onFlea prevention alongside treatment of existing infestations
Pros
  • Two active ingredients: fipronil plus (S)-methoprene for adult fleas and egg/larva control
  • Six monthly doses per box, about $2.46 per dose at the $14.77 eBay price
  • Waterproof and odorless once dry
  • Covers fleas, ticks, flea eggs and flea larvae
  • Sized specifically for 6-22 lb dogs
Cons
  • Not for cats; toxic to cats if applied or licked
  • Weight-band dosing means a separate box for larger dogs
  • Spot-on application can leave a greasy patch for a day
  • Flea and tick resistance to fipronil is reported in some regions
  • Requires monthly reapplication to keep protection going

TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs prices at every store

  • eBayNew

    In stock

    $26.95Observed at 5:09 AM
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  • mercari.comNew

    In stock

    $31.00Observed at 5:09 AM
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  • TargetNew

    In stock

    $34.97Observed at 5:09 AM
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  • WalmartNew

    In stock

    $34.97Observed at 5:09 AM
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  • Chewy.comNew

    In stock

    $34.97Observed at 5:09 AM
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Also available at

  • eBayCheck price at eBay

TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs price history

Lowest price we've seen: $26.95 on Nov 4 at eBay. Tracked across 5 stores since Nov 4.

What reviewers say

With 4 out of 5 from 656 ratings, most owners report it works as a lower-cost alternative to vet-brand spot-ons, especially for fleas. Complaints center on ticks and on reactions in sensitive dogs.

Pros
  • Noticeably cheaper than name-brand flea treatments
  • Clears fleas within a day or two for many users
  • Odorless and dries without a strong smell
  • Six doses last most of the year for one small dog
Cons
  • Some owners still find ticks on their dogs
  • A few report skin irritation or lethargy after application
  • Greasy residue at the application site
  • Effectiveness seems to fade before the 30-day mark for some dogs

Specifications

Targeted Pests
Fleas, Ticks
Active Ingredient
(S)-methoprene, Fipronil
Administration Method
Topical
Life Stage Age
All Lifestages
Treatment Frequency
Monthly
Dosage Concentration
Fipronil 9.8%, (S)-Methoprene 8.8%
Dosage Duration
Up to 30 days (after each application)
Formulation Type
Spot-on
Formulation
Waterproof
Lifecycle Targeted
Fleas, Flea eggs, Flea larvae
Animal Type
Dogs
Treatment Type
Prevention, Treatment
Supply Duration
6 months supply
Supply Amount
6 doses
Weight Range
6-22 lbs
Breed Restrictions
Do not use on cats
Contains
(S)-methoprene
Free Of
Odorless
Package Type
Box
Scent
Odorless

Questions and answers

Is TevraPet FirstAct Plus worth it compared with vet brands?
It uses the same two active ingredients as many vet-sold spot-ons, fipronil and (S)-methoprene, at a much lower price per dose. If your dog has had flea problems that resisted fipronil products before, a vet-prescribed option may work better.
Can I use it on my cat or a dog under 6 lbs?
No. It is labeled only for dogs 6-22 lbs and warns against use on cats. Cats are highly sensitive to fipronil, so keep treated dogs away from cats until the product dries.
How long does one dose last, and is it waterproof?
Each dose is labeled for up to 30 days, and the formula is waterproof once dry. Reapply monthly, and avoid bathing the dog for about 48 hours after application.
What is in the box?
Six single-dose spot-on applicators, a six-month supply for one dog in the 6-22 lb range. The box contains no collar or oral tablets.
When is the price lowest?
The best new price seen is $14.77 at eBay as of November 4, 2026, across five stores. Multi-box bundles and spring flea-season sales tend to bring the per-dose cost down.
Where is the TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs cheapest?
At eBay, for $26.95, 23% under what the other stores charge, as of our latest check.
What do buyers say about the TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs?
Rated 4 out of 5 from 656 ratings.
Where can I buy the TevraPet FirstAct Plus Flea and Tick Prevention for Small Dogs 6-22 lbs?
5 stores we checked sell it, including eBay, mercari.com, Target, Walmart, Chewy.com.

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