Bayer Sale Tracker, November 2026

Prices checked Nov 7, 2026, 2:19 PM ET

Is Bayer on sale?

Not right now: Bayer prices are at their usual levels.

Bayer prices today, and how low they've been

Not right now. Bayer prices are at their usual levels: the Bayer Advantage II Flea Control for Large Cats is $51.92 at Chewy. Any Bayer deal shows here as soon as it starts.

Bayer is known for its flea and tick treatments for pets, including Advantage II and the Seresto collar. Advantage II kills fleas at every life stage, while Seresto offers up to 8 months of protection in one collar. Deal.ai checks the price of each Bayer product at every store and keeps its price history.

Ask our shopping agent

It checks today's price at every store, compares the alternatives and answers in about a minute.

Questions and answers

Where is Bayer Advantage II cheapest?: Deal.ai compares every store's price for each Advantage II size, so the lowest price can differ by dog weight and cat size. Check the product page for the current cheapest store and its price history.
How long does the Seresto collar last?: The Seresto collar for dogs is labeled for up to 8 months of flea and tick protection per collar. It is not recommended for puppies under 7 weeks.
Does Advantage II kill flea eggs and larvae?: Yes. Advantage II contains pyriproxyfen, an insect growth regulator that stops flea eggs and larvae from developing, along with imidacloprid to kill adult fleas.
When does Bayer put its flea products on sale?: Bayer flea products usually see deeper discounts in spring and early summer, when flea season starts. Deal.ai tracks each product's price history so you can see when prices typically drop.
What is Bayer's return policy on pet products?: Returns depend on the store you buy from, not on Bayer. Check the seller's return window and whether opened flea treatments can be returned before you buy.
Are there Bayer discount codes?: Deal.ai doesn't list Bayer discount codes. It checks what Bayer products actually cost at every store, so a real markdown shows on this page as a deal as soon as it starts, and each product's page has its price history to tell a sale from its usual price.

Questions and answers

Where is Bayer Advantage II cheapest?

Deal.ai compares every store's price for each Advantage II size, so the lowest price can differ by dog weight and cat size. Check the product page for the current cheapest store and its price history.

How long does the Seresto collar last?

The Seresto collar for dogs is labeled for up to 8 months of flea and tick protection per collar. It is not recommended for puppies under 7 weeks.

Does Advantage II kill flea eggs and larvae?

Yes. Advantage II contains pyriproxyfen, an insect growth regulator that stops flea eggs and larvae from developing, along with imidacloprid to kill adult fleas.

When does Bayer put its flea products on sale?

Bayer flea products usually see deeper discounts in spring and early summer, when flea season starts. Deal.ai tracks each product's price history so you can see when prices typically drop.

What is Bayer's return policy on pet products?

Returns depend on the store you buy from, not on Bayer. Check the seller's return window and whether opened flea treatments can be returned before you buy.

Are there Bayer discount codes?

Deal.ai doesn't list Bayer discount codes. It checks what Bayer products actually cost at every store, so a real markdown shows on this page as a deal as soon as it starts, and each product's page has its price history to tell a sale from its usual price.