Flea and Tick Prevention for Dogs: Collar vs Topical vs Oral

You spot your dog scratching behind the ear. Hard. You part the fur and see them. Tiny, dark, moving specks. Your stomach drops.

Fleas and ticks are more than gross. They carry diseases like Lyme, ehrlichiosis, and tapeworms. A 2023 study in the journal Pathogens found that tick-borne disease cases in dogs have risen nearly 40% in the last decade. So picking the right prevention matters.

But which type is best? Collars? Spot-on liquids? Chewable pills?

I tested all three on my own dogs over the last five years. Here is the honest breakdown.

How flea and tick collars work

Collars like the Seresto 8-month collar release active ingredients continuously into the oils and waxes of your dog’s skin and coat. They do not enter the bloodstream. The chemicals spread outward from the collar site over a few days, eventually covering the whole body.

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Related: Essential Dog First Aid Kit: What to Include for Emergencies

Disclaimer: This article is for informational purposes only and does not constitute veterinary advice. Always consult with a licensed veterinarian for medical concerns about your pet.