Seresto 8-Month Flea & Tick Collar

The verdict

A collar that does the remembering for you. The listing states eight continuous months of flea and tick killing and repelling, which means one decision a season instead of twelve, and that matters most in the adult and senior years when the monthly routine quietly lapses. The manufacturer says it is suitable for puppies from seven weeks, but the question of whether a collar or an oral preventive is right for your dog and your region is a vet question, not a review question. What the owner feedback consistently praises is the set-and-forget convenience; what it consistently flags is checking fit every few weeks as a growing or slimming dog changes neck size.

Drawbacks

• Must be fitted with two fingers of slack and rechecked as the dog changes shape
• Not the right first choice for every region or every dog; ask your vet which preventive class fits

Researched from the manufacturer’s listing, its published specifications and what owners report. We do not test products on dogs.

What the listing says

• Eight months per collar per the listing, so no monthly dosing to forget
• Water-resistant per the manufacturer, with normal swimming and bathing allowed
• Very large owner-feedback base for a preventive product

Specifications

Specs come from the manufacturer listing and Amazon’s public product data. A field that reads “Not stated” is one we have not verified — not one the product lacks. We research and analyse; we do not test products on dogs.