Seresto Collar vs Frontline Plus
A detailed comparison of Seresto Collar and Frontline Plus for dogs. Which is the better choice? We compare ingredients, dosing, price, and side effects.
Seresto Collar
Long-lasting flea and tick collar that provides continuous protection for up to 8 months. No monthly applications needed.
Frontline Plus
Monthly spot-on flea and tick treatment. The most widely known flea product in the UK.
Save on Seresto Collar or Frontline Plus at a UK pharmacy
UK registered pharmacies dispense the same prescription medications as your vet, often for less. Ask your vet for a written prescription, then fill it online.
Affiliate links to The Pharm Pet Co., a UK registered veterinary pharmacy. We may earn a small commission, at no extra cost to you. Always follow your vet's guidance on medication choice and dosing.
Side-by-Side Comparison
| Feature | Seresto Collar | Frontline Plus |
|---|---|---|
| Active Ingredient | Imidacloprid + Flumethrin | Fipronil + (S)-Methoprene |
| Form | Collar | Spot-on pipette |
| Frequency | Replace every 8 months | Monthly |
| Species | Dogs | Dogs |
| Price Range | £25–£40/collar (8 months) | £4–£10/month |
Key Differences
Convenience
Seresto lasts 8 months with zero effort; Frontline needs monthly application.
Annual cost
Seresto: ~£40–55/year. Frontline Plus: ~£48–120/year.
Application method
Seresto is a collar worn continuously; Frontline is a liquid applied to the skin.
Flea resistance
Seresto uses imidacloprid + flumethrin (effective); Frontline uses fipronil (growing resistance).
Children
Seresto collar can be a concern if children hug/touch the dog frequently.
Pros & Cons
Seresto Collar
Pros
- 8 months continuous protection — ultimate convenience
- Works out very cheap per month
- No messy applications
- Water resistant — ok for swimming dogs
Cons
- Some dogs dislike wearing a collar
- Not suitable for households with young children (collar contact)
- Cannot adjust dose — one size approach
- Must be worn continuously to work
Frontline Plus
Pros
- No collar needed — invisible protection
- Widely available and trusted
- Cheap per application
- Can stop treatment easily by not applying
Cons
- Monthly application needed
- Growing flea resistance to fipronil
- Greasy residue on coat
- More expensive per year than Seresto
Compare Prices & Save
Both Seresto Collar and Frontline Plus may be cheaper from a licensed online retailer than from your vet. Ask for a written prescription and compare prices.
Important: This comparison is for informational purposes only and is not veterinary advice. Always consult your vet before starting, stopping, or switching your pet's medication. Prices shown are typical UK ranges and may vary by product size, weight band, and retailer.
Alternative options to consider
Retailers we earn a commission from. It costs you nothing and never changes what we show.
Flea & Tick Treatments for Dogs
Vet-strength flea and tick treatments at pharmacy prices. Frontline, Advocate, Bravecto, Nexgard and more.
Pet Flea Treatments at Pharmacy2U
Frontline, Advantage and own-brand flea treatments at pharmacy prices. Trusted UK pharmacy since 1999.
VetBox Flea & Worm Protection for Dogs
Vet-founded monthly parasite subscription. Flea, tick and worm protection delivered to your door. Founded by Dr Will Woodley, protecting 30,000+ pets.
We may earn a small commission if you purchase through these links, at no extra cost to you.