
See the current low price, unit value, merchant options, and recent price history before you buy or set a drop alert.
Advantage II · 9 lb bag at $5.78/lb, 17% above its 90-day average.
Merchant rows include current price, subscription price where available, unit cost, and shipping notes.
Current best price is $7.67 above the 90-day avg. Chart starts at May 14 because that is the earliest observed point in this window. Recent range: $41.59 to $51.98.
Sorted by category match, unit-price proximity, pet type, and deal score so the comparison stays stable between visits.

Hartz UltraGuard · 5 lb bag at $4.80/lb, holding near its 90-day average.

Confirm pet type, weight range, age guidance, treatment duration, and active format before price.
Advantage XD · 9 lb bag at $6.67/lb, holding near its 90-day average.

Vectra for · 9 lb bag at $4.33/lb, 20% above its 90-day average.

Advantage II · 5 lb bag at $6.71/lb, holding near its 90-day average.

K9 Advantix · 10 lb bag at $3.56/lb, 35% above its 90-day average.

Amazon Basics · 4-count pack at $5.82/count, 17% above its 90-day average.