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Seresto Collar for Small Dogs Up to 18 Lbs ( Up to 8 Kg)
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AU
BASED IN AUSTRALIA
Tracked Delivery 7-14 Days
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GENUINE BRANDED PRODUCT
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Choose based on your dog's weight
Description
Seresto Collar for Small Dogs Up to 18 Lbs ( Up to 8 Kg) measuring 38 cm delivers continuous flea and tick protection for 8 months through a patented polymer matrix that releases imidacloprid 100 mg/g and flumethrin 45 mg/g at sustained low concentrations directly onto the skin and coat. The collar eliminates the need for monthly reapplication while maintaining consistent active ingredient levels throughout the protection period. One collar per dog, fitted once, replaced at the 8-month mark.
Recommended for
Dogs weighing up to 18 lbs (up to 8 kg) from 7 weeks of age.
Indication/Coverage
For dogs susceptible to, or already presenting with, mixed parasitic infestations:
- Flea treatment (Ctenocephalides spp.): Kills adult fleas on contact beginning immediately after collar application, covering all life stages present on the animal for 8 months.
- Flea prevention (Ctenocephalides spp.): Disrupts larval development in the immediate surroundings of the treated dog, reducing environmental flea burden throughout the protection period.
- Flea allergy dermatitis (FAD): Controls the flea infestation triggering FAD; ongoing flea exposure in sensitised dogs should be assessed by a veterinarian.
- Tick control: Kills and repels ticks across all three active life stages for 8 months; newly infesting ticks are killed and detach within 24 to 48 hours without taking a blood meal.
- Lice treatment (infestation): Eliminates lice infestations in dogs for 8 months following a single collar application.
Key Benefits
Seresto 38 cm delivers the following clinically relevant properties:
- Eligible from 7 weeks: Dogs at least 7 weeks of age and not yet exceeding 8 kg body weight fall within the labeled use parameters for this collar size.
- Dual active ingredient coverage: Imidacloprid targets fleas via nicotinic acetylcholine receptor disruption; flumethrin acts on ticks and repels new infestations through sodium channel interference in the pyrethroid class.
- Contact-based kill mechanism: Neither ingredient requires the parasite to take a blood meal to be affected, reducing the window for disease transmission during tick attachment.
- Immediate onset against fleas: Flea kill begins upon collar application, with no loading period required before efficacy is established.
- 8-month single application: One collar replaces eight monthly spot-on or oral doses, eliminating missed-dose risk associated with monthly treatment schedules.
- Multi-stage tick efficacy: The collar is active against larval, nymphal, and adult tick stages, not solely adult ticks, which matters in regions where larval infestations are seasonally prevalent.
- Collar format for resistant dogs: Dogs that resist spot-on application or refuse oral chewables can be maintained on continuous parasite control without monthly handling.
Caution
Hazards to Humans
Keep out of reach of children. Do not eat, drink, or smoke while fitting or handling the collar. Wash hands thoroughly with soap and water after each contact with the collar or the animal wearing it. If swallowed, prolonged ingestion may cause damage to the skin and liver; seek medical attention immediately and contact a poison control center.
Hazards to Domestic Animals
For external use on dogs only. Do not use on puppies younger than 7 weeks or on dogs exceeding 8 kg body weight, as this collar size is outside the labeled dosage range for larger animals. Dogs that are debilitated, aged, pregnant, or nursing should be assessed by a veterinarian before fitting. Application site reactions including pruritus, erythema, and localised hair loss occur rarely and typically resolve within 1 to 2 weeks; collar removal may be warranted if reactions persist. Do not use in combination with other insecticide products.
Possible Side Effects
Monitor your dog closely during the first few days after collar application, as initial reactions are most likely to appear within this window.
The following adverse effects have been reported with Seresto use, organised by presentation type:
- Dermal reactions (application site): Pruritus, erythema, and hair loss at or near the collar site occur rarely; most cases resolve spontaneously within 1 to 2 weeks without collar removal. Temporary removal may be recommended if symptoms are marked.
- Inflammatory skin reactions: In very rare instances, dermatitis, inflammation, eczema, or lesions at the application site have been documented; collar removal is indicated in these cases.
- Gastrointestinal and behavioural signs: Mild, transient signs including salivation, vomiting, diarrhoea, and appetite changes have been reported in rare cases during the first few days after fitting, potentially associated with collar ingestion or licking.
- Systemic behavioural signs: Depression or generalised behavioural change has been observed rarely and is considered transient.
If any adverse effect persists or the dog’s condition deteriorates following collar application, remove the collar and consult a veterinarian.
Direction
Seresto is a polymer matrix collar applied externally around the dog's neck. Fit the collar snugly, leaving enough slack to insert two fingers between the collar and the neck. After trimming excess length, the collar should be worn continuously for the full 8-month protection period. Water resistance is maintained under normal bathing conditions, though prolonged or repeated water exposure reduces the duration of activity and should be avoided. Do not use in combination with other insecticide collars or topical insecticide products.How to Open
- Remove the sealed protective bag from packaging. Do not open the bag until immediately before fitting.
- Cut or tear the protective bag along the indicated edge to access the collar.
- Unroll the collar fully and inspect the inner surface to confirm no remnants of plastic connectors remain inside.
- Proceed directly to fitting; do not leave the collar exposed for extended periods before application.
How to Apply
- Place the collar loosely around the dog's neck before adjusting tension.
- Slide the collar through the fastening loop and adjust so that two fingers can be inserted between the collar and the neck. Fit should be firm without causing pressure or restriction.
- Pull any remaining excess length through the loop and trim the surplus to no more than 2 cm beyond the loop.
- Optionally, attach the three reflector clips by distributing them evenly along the non-overlapping collar section. Press each clip until a click confirms the correct attachment. Note that once clips are fixed, the clasp closes permanently and cannot be reopened.
- Check collar fit periodically, particularly in growing puppies, and readjust as the animal's neck size changes.
Storage
- Store below 30°C (86°F).
- Keep in the original sealed protective bag until immediately before use.
- Keep out of reach of children.
- Do not use after the expiry date printed on the packaging; the expiry date refers to the last day of the stated month.
Tips for Using
To ensure your Seresto Collar works effectively, fit it properly, keep it on continuously, and follow moisture exposure guidelines. Incorrect use is one of the most common reasons for reduced protection.- Wear against the skin: Ensure the collar sits directly on your dog's skin, not over thick fur, another collar, or a harness.
- Use the two-finger fit: Adjust the collar so only two fingers can fit comfortably between the collar and your dog's neck.
- Remove plastic pieces: Detach all plastic connectors and leftover mold tabs before use.
- Trim the excess: After fitting, cut off any extra collar length, leaving about 1 inch (2 cm) beyond the loop.
- Keep it on continuously: Leave the collar on day and night for uninterrupted protection.
- Water-resistant protection: The collar can stay on during rain, short swims, and routine baths.
- Replace earlier for swimmers: Frequent swimming may shorten the collar’s effective protection period.
- Buy from trusted sellers: Purchase only from authorized retailers or your veterinarian to avoid counterfeit products.
- Avoid combining treatments: Do not use additional flea or tick products unless advised by your vet.
- Monitor for reactions: Check your dog's neck during the first week and contact your vet if irritation or unusual symptoms occur.
| Product Name | Seresto Collar for Small Dogs Up to 18 Lbs (Up to 8 Kg) (38 cm) |
|---|---|
| Target Weight | Up to 18 lbs ( up to 8 Kg) |
| Packaging Color | Blue |
| Collar Length | 38 cm |
| Active Ingredients | Flumethrin: 45 mg/g, Imidacloprid: 100 mg/g |
| Key Excipients | Patented Bayer polymer matrix (slow-release carrier); no food-derived excipients |
| Application Type | Slow-release polymer collar worn around the neck |
| Appearance | Grey polymer matrix collar |
| Administration Route | For external use only; worn around the neck |
| Pack Sizes Available | Single collar per box |
| Treatment Frequency | Replace every 8 months |
| Effective Against | – Fleas (Ctenocephalides spp., all stages) |
| Storage | Below 30°C (86°F) |
FAQs
1. Is the 38 cm Seresto collar the right size if my dog weighs exactly 8 kg?
Yes. The 38 cm collar is labeled for dogs up to 8 kg body weight. A dog weighing exactly 8 kg on the day of fitting is within the indicated range. Dogs that have exceeded 8 kg should use the 70 cm Seresto collar for dogs over 8 kg instead.
2. What happens if my dog is slightly under the 7-week minimum age?
Do not apply the collar to puppies younger than 7 weeks. The minimum age restriction reflects labeled safety data; use in younger animals falls outside approved parameters. Puppies younger than 7 weeks requiring flea control should be assessed by a veterinarian, who may recommend ADVANTAGE for this age group.
3. My dog just passed 8 kg. Do I need to switch collars immediately?
Yes. Once a dog exceeds 8 kg, the 38 cm collar no longer delivers the correct dose for body weight. Switch to the Seresto 70 cm collar at the next application point. If the current collar is mid-cycle, consult a veterinarian on the appropriate timing for the transition.
4. Can I use Seresto alongside a monthly spot-on or oral flea treatment?
No. The product label explicitly states it should not be used in combination with other insecticides. Concurrent use introduces the risk of additive toxicity. If supplemental parasite coverage is needed, consult a veterinarian before combining any products.
5. What should I do if my dog was already infested with ticks when I fitted the collar?
Remove visible ticks manually before or immediately after fitting. Ticks already attached at the time of collar application may not be killed immediately and can remain attached for a period after treatment begins. Prevention of new infestations starts upon collar application; existing attached ticks require manual removal.
6. Is it safe to bathe my dog while wearing the Seresto collar?
Occasional bathing does not require collar removal, as the product is water resistant. Prolonged or repeated water exposure, including swimming or frequent washing, reduces the duration of efficacy. Where possible, limit bathing frequency during the 8-month protection window.
7. How will I know when the collar needs replacing?
The collar should be replaced at 8 months from the fitting date regardless of visible condition. Active ingredient reserves in the polymer matrix deplete over the protection period irrespective of how the collar appears externally. Mark the fitting date and replace at the labeled interval.
8. My dog showed scratching and mild redness at the collar site after fitting. Is this normal?
Mild pruritus and erythema at the application site occur rarely and generally resolve within 1 to 2 weeks without removing the collar. If reactions are severe, persistent beyond 2 weeks, or progress to lesions, hair loss, or swelling, remove the collar and consult a veterinarian.
9. Can the Seresto 38 cm collar be used on pregnant or nursing dogs?
Safety during pregnancy and lactation has not been established for this product. The label notes that laboratory studies with flumethrin or imidacloprid in rats and rabbits produced no teratogenic or foetotoxic effects, but labeled use in pregnant or nursing dogs should be discussed with a veterinarian before application.
10. What is the difference between the 38 cm and 70 cm Seresto collars for dogs?
The two collars differ in length and total active ingredient load, calibrated to the respective weight ranges. The 38 cm collar is for dogs up to 8 kg; the 70 cm collar is for dogs above 8 kg. Both deliver the same active ingredients (imidacloprid and flumethrin) at the same concentration ratio, with total dose scaled to body weight via collar size.
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