Seresto Flea and Tick Collar for Small Dogs (Up to 18 lbs)
Seresto Flea and Tick Collar for Small Dogs is designed specifically for small dogs and puppies 7 weeks of age and older, weighing up to 18 lbs. With a collar length of approximately 15 inches (38 cm), it offers a comfortable and adjustable fit for small-sized dogs and puppies. The collar provides long-lasting flea, tick, and lice protection through a sustained release system that distributes active ingredients across your dog’s skin and coat. Odorless and easy to use, it is designed to be worn continuously for ongoing protection. Simply fit according to label directions and check periodically to ensure a proper fit, especially for growing puppies.
How it helps
Seresto uses a patented polymer matrix technology that slowly and continuously releases its active ingredients over 8 months. These ingredients spread across your dog’s skin surface to provide steady protection.
It begins preventing new tick infestations within 48 hours of application and kills new fleas within 2 hours after the first 24 hours. By killing and repelling fleas and ticks before they can bite, Seresto helps lower the risk of exposure to diseases that may be transmitted by these parasites, including those carried by deer ticks, American dog ticks, brown dog ticks, and lone star ticks.
Who it’s for
- Dogs and puppies 7 weeks of age and older, weighing up to 18 lbs
Why Pet Parents Choose It
- Provides up to 8 months of continuous protection
- Kills and repels fleas and ticks through contact, no biting required
- Protects against fleas, ticks, and chewing lice
- Helps prevent new tick infestations within 48 hours
- Helps reduce the risk of flea- and tick-borne diseases by killing and repelling parasites before they bite
- Protects against ticks that may transmit Lyme disease and other tick-borne illnesses
- Controls fleas that may contribute to tapeworm infections and other vector-borne conditions
- Kills fleas before they lay eggs
- Odorless and non-greasy
- Water-resistant for everyday activities
- No monthly dosing required
How to Use
- One collar per dog to be fastened around the neck.
- Remove the collar from the packaging.
- Insert the end of the collar through the buckle.
- Place around your dog’s neck and adjust for a snug fit.
- Ensure you can fit two fingers comfortably between the collar and neck.
- Pull excess collar through the loop(s).
- Trim excess length to no more than 1 inch (2 cm) beyond the loop(s). Note : For growing puppies, leave a little extra length for adjustment.
- Collar should be worn continuously for 8 months.
- Check fit regularly and adjust as needed, especially for growing puppies.
- Collar includes a safety release mechanism designed to widen if your dog becomes trapped.
- Replace with a new collar after 8 months for continued protection.
Safety & Care Tips
- For external use on dogs only.
- Do not use on puppies under 7 weeks of age.
- Ensure proper fit, not too tight or too loose.
- Monitor your dog after initial application.
- Water-resistant and remains effective after swimming, rain, or shampooing.
- Lasts up to 8 months under normal conditions.
- Dogs should not be bathed more than once per month to maintain full 8-month effectiveness.
- Monthly swimming may reduce protection duration (5 months for fleas, 7 months for ticks).
- Pre-existing flea pupae in the environment may continue to emerge for 6 weeks or longer; treat living areas with an approved home-use product.
- Remove any ticks already attached at the time of application (existing ticks may not be killed immediately).
- New tick prevention begins within 48 hours of application.
- If the collar is lost, apply a new one immediately.
- Keep collar sealed in original packaging until use.
- Keep out of reach of children; do not allow children to play with the collar.
- People sensitive to the ingredients should avoid contact.
- Mild scratching may occur in the first few days.
- Temporary hair loss or mild skin reactions at the application site may occur and usually resolve within 1–2 weeks.
- Consult your veterinarian for animals with sensitivities, or before use in debilitated, aged, breeding, pregnant, nursing, or medicated dogs.
- Do not attach a leash to the collar.
- Avoid contact with eyes and mouth.
- Wash hands thoroughly after handling.
- Do not use container for food storage or other purposes.
- Dispose of pouch and expired collar in trash. Outer container may be recycled or disposed of in trash.
What’s Inside
Active Ingredients:
Available Pack Sizes
- Collar for dogs up to 18 lbs
- Collar for dogs over 18 lbs
Choose the correct size based on your dog’s current weight.
| Product Name |
Pet Size |
Pet Weight |
Collar Size (approx.) |
| Seresto Flea & Tick Collar |
Small Dogs |
Up to 18 lbs |
15 inch (38 cm) |
| Seresto Flea & Tick Collar |
Large Dogs |
Over 18 lbs |
27.5 inch (70 cm) |
Long-lasting and convenient.