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Seresto
Seresto Collar for Small Dogs (6-Pack)

Seresto Collar for Small Dogs (6-Pack)

4.2· 35,000 ratings

Best price now

$327.00at EntirelyPets PharmacyObserved at 5:09 AM

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Our take on the Seresto Collar for Small Dogs (6-Pack)

The Seresto collar is a vet-recommended flea and tick collar for dogs up to 18 lbs and puppies 7 weeks and older. It releases flumethrin and imidacloprid for up to 8 months, starts killing fleas within 24 hours, and is water-resistant and non-greasy. This listing is a 6-pack, which covers about four years of protection for one small dog or a multi-dog household. The best new price is $327.00 at EntirelyPets Pharmacy as of November 4, 2026, the only new price listed.

Best forSmall dogs under 18 lbsMulti-dog householdsOwners who want 8 months of protection per collarPuppies 7 weeks and older
Pros
  • Up to 8 months of flea and tick protection per collar
  • Starts killing fleas within 24 hours
  • Water-resistant and non-greasy
  • No prescription needed
  • Adjustable 70 cm collar fits small necks
  • Can be worn alongside a regular ID collar
Cons
  • Not for dogs over 18 lbs
  • Bathing limited to once a month
  • Six collars is a large outlay and a long commitment
  • Some dogs have skin reactions at the collar site

Seresto Collar for Small Dogs (6-Pack) prices at every store

  • EntirelyPets PharmacyNew

    In stock

    $327.00Observed at 5:09 AM
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Seresto Collar for Small Dogs (6-Pack) price history

Lowest price we've seen: $327.00 on Nov 4 at EntirelyPets Pharmacy. Tracked across 1 store since Nov 4.

What reviewers say

With about 35,000 ratings averaging 4.2 out of 5, most owners report the collar keeps fleas and ticks off for months and is easier than monthly drops. A minority report skin irritation, hair loss at the neck, or reduced effectiveness late in the 8-month window.

Pros
  • Long-lasting protection
  • Easy to fit and forget
  • Works well for dogs that hate spot-on treatments
  • Water-resistant for swimming and rain
Cons
  • Skin irritation or sores on some dogs
  • Effectiveness seems to fade before 8 months for some
  • Price per collar is high
  • Bathing restrictions are inconvenient

Specifications

Active Ingredients
Flumethrin, Imidacloprid
Application Duration
8 months
Application Method
Collar
Application Frequency
Every 8 months
Effectiveness Duration
8 months
Pests Controlled
Fleas, Ticks
Speed Of Action
Starts working within 24 hours to kill & repel fleas
Animal Type
Dog
Age Range
Puppies
Breed Size
Small
Collar Length
70 cm
Adjustable Size
Yes
Supply Duration
8 months
Age Restrictions
7 weeks of age and older
Weight Restrictions
Up to 18 lbs
Life Stage
Puppies
Typical Users
Pet owners
Formulation Type
Collar, Water-resistant
Formulation Highlights
Non-greasy

Questions and answers

Is the 6-pack worth it?
If you have several small dogs or want years of supply for one dog, the per-collar cost is lower than buying singles. Each collar lasts 8 months, so six collars cover about four years for one dog. Check the expiry date on the pack.
How does Seresto compare with monthly spot-on treatments?
Seresto protects for 8 months with no monthly dosing, which many owners find easier. Spot-ons are reapplied monthly and are not limited by the once-a-month bathing rule. Both control fleas and ticks.
Can I bathe my dog while wearing the collar?
Yes, but no more than once a month. Frequent bathing can wash out the active ingredients and shorten protection. The collar is water-resistant for rain and swimming.
What size dog does this collar fit?
It is for dogs up to 18 lbs and at least 7 weeks old. The 70 cm collar is adjustable, so trim any excess after fitting it snugly.
Can my dog wear it with a regular collar?
Yes. Seresto can be worn alongside an identification or restraining collar. Make sure neither collar is tight enough to rub.
When is the best time to buy?
Flea and tick season drives prices up in spring and summer. Buying in fall or winter, or stocking up with a multi-pack, usually costs less.
Where is the Seresto Collar for Small Dogs (6-Pack) cheapest?
At EntirelyPets Pharmacy, for $327.00, as of our latest check.
What do buyers say about the Seresto Collar for Small Dogs (6-Pack)?
Rated 4.2 out of 5 from 35,000 ratings.