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Seresto™ Collar for dogs

Seresto provides the longest lasting protection against fleas and ticks^ for dogs. Seresto is an odourless, water-resistant* collar that works on contact, so fleas and ticks don’t need to bite to be killed. It’s the simple way to keep your best friend protected! 

Why choose Seresto™ for your dog?

  • Flea tick icon

    Kills fleas, repels and kills paralysis ticks through contact - no biting required

  • Number eight

    Provides up to 8 months of flea and paralysis tick protection

  • 4 icon

    Reduces transmission of tick-borne diseases, including deadly ehrlichiosis, by controlling brown dog ticks for 4 months

  • Water resistant icon

    Water-resistant*- no need to remove it before swimming or bathing

    *See product label for further information. 

  • Odourless icon

    Odourless and easy to apply 

Seresto Product Details 

Parasite protection: Paralysis tick, brown dog tick, bush tick and fleas 

Pet type: Dogs and puppies 

Application type: Collar 

Dosage: 8 months flea and paralysis tick protection, 4 months protection from brown dog ticks and bush ticks, and 4 months protection from tick-borne diseases.

Sizes available: Seresto for Dogs comes in two convenient sizes: 

Seresto for Dogs up to 8kg 

Seresto for Dogs over 8kg 

How does Seresto for Dogs work?

Active ingredients: Seresto’s innovative polymer matrix stores two active ingredients, imidacloprid and flumethrin, within the collar. 

Innovative collar technology: Once fitted to your dog, the active ingredients migrate from the collar and spread through the fatty/oily layer of your dog’s skin and hair coat, where they work on contact to kill fleas, and repel and kill ticks. 

Long lasting protection: The active ingredients continue to migrate in low doses from the collar to your dog, as needed, to provide continuous protection against fleas and paralysis ticks for 8 months and brown dog & bush ticks and tick-borne diseases, including deadly ehrlichiosis, for 4 months. 

What does Seresto protect against? 

Ticks: Controls paralysis ticks for 8 months and controls brown dog ticks and bush ticks for 4 months.

Fleas: Treats and prevents flea infestations for 8 months. Prevents flea tapeworm through effective flea control and reduces the incidence of flea allergy dermatitis. 

Tick-borne diseases: Reduces the transmission of ehrlichiosis, babesiosis and anaplasmosis for 4 months.

Lice: Treats biting/chewing lice present at the time of treatment.

Find us at your favourite retailers

Stop Sucking with Seresto.

Steps on how to apply Seresto

Graphic showing connectors.

1.

Remove the Seresto™ collar from its protective pouch and unroll, ensuring that no plastic connectors remain attached to the inside surface of the collar.

Put on collar on dog.

2.

Put the collar around your dog’s neck. Insert the loose end through the two loops.

Ensure 2 fingers fit between collar and neck.

3.

Tighten until two fingers fit between the collar and your dog's neck.

Cut off the extra length.

4.

Cut off any extra length of collar, leaving about 2 cm of the loose end beyond the second loop. For puppies, leave additional length to allow for adjustment of the collar as they grow.

Seresto for dogs and puppies up to 8 kg packshot

Seresto™ for Dogs - Under 8kg


Seresto for dogs > 8 kg packshot

Seresto™ for Dogs - Over 8kg


^ In a high tech collar.

* See product label for further information. 

Read the product leaflet for full instructions.

Download the product Safety Data Sheet.

Seresto™ and the diagonal bar or logo are trademarks of Elanco or its affiliates. ABN 64 076 745 198. Level 3, 7 Eden Park Drive, Macquarie Park NSW 2113. For further information contact: 1800 995 709 from anywhere in Australia Monday to Friday or email productsupportau@elancoah.com © 2022 Elanco

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Elanco acknowledges the Traditional Custodians of Country throughout Australia and their continuing connection to land, sea and community. We pay our respects to all Aboriginal and Torres Strait Islander peoples, their cultures and to their Elders past and present. © 2025 Elanco or its affiliates.