Large 21–55
K9 Advantix II Flea & Tick Topical for Large Dogs 21–55 lbs., 2-Dose
Two months for the dogs most houses actually have.
3 box sizes$35.62
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Best large-dog value
K9 Advantix II Flea & Tick Topical for Large Dogs 21–55 lbs., 6-Dose
$79.97
Price set by the retailer and may change.
Shop NowSix red months on one shelf — the box for the household that never wants to discover it's out in July.
- Six doses: the red band's longest supply
- $13.33 a month, the band's best rate
- No mid-summer reorder scramble
- Same label, same five pests, all six months
More from Large 21–55
Large 21–55
K9 Advantix II Flea & Tick Topical for Large Dogs 21–55 lbs., 4-Dose
A weekend hiker's whole season, boxed.
3 box sizes$57.42
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K9 Advantix II Flea & Tick Topical for Large Dogs 21–55 lbs., 6-Dose
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