Medium 11–20
K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 1-Dose
One month to convince a skeptical beagle.
4 box sizes$19.97
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Best mid-size box
K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 4-Dose
$57.42
Price set by the retailer and may change.
Shop NowThe aqua season box — four doses that carry a medium dog through the months when the grass is tallest.
- Four months of coverage in one order
- $14.36 a month — the mid-box sweet spot
- Waterproof after 24 hours, swim-season ready
- Same dose, same band, fewer reorder gaps
More from Medium 11–20
Medium 11–20
K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 2-Dose
Two aqua months, no long promises.
4 box sizes$35.62
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Medium 11–20
K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 6-Dose
Six months of quiet for under $13 a month.
4 box sizes$77.90
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K9 Advantix II Flea & Tick Topical for Medium Dogs 11–20 lbs., 4-Dose
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