Hi. Unfortunately, we’re not able to answer this question. We recommend you contact the seller for more information.

I have use one after 7 days and still see fleas. Why? I never had this problem b 4.

I have the same problem. Fleas have developed a resistance to Frontline, Advantix, and ....... I don't know if anything still works. I've been brushing my dog frequently to remove fleas temporarily.

Is there an expiration date on this product?

lot number. I usually start treating the my dogs(4) on apr. 15th-I live in western ny-and will continue till first hard frost. so I usually use a full box within a year for each dog

Hi. Unfortunately, we’re not able to answer this question. We recommend you contact the seller for more information.

Bayer Ii Topical Flea Treatment Dogs | Desertcart Czech Republic

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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3418 Kč

Duties & taxes included

In stock

Sold byAmazon Czech RepublicDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Czech Republic.

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Description

🐾 Stay ahead of fleas—because your small dog deserves big protection!

RAPID FLEA DEFENSE - Kills fleas on contact within 12 hours—no bites needed!
MONTH LONG PROTECTION - One application shields your pup for a full 30 days of flea-free comfort.
TAILORED FOR SMALL DOGS - Precisely dosed for dogs weighing 3-10 pounds, ensuring safe and effective treatment.
WATERPROOF AFTER 24 HOURS - Keeps working even if your dog loves to splash or play outdoors.
VET RECOMMENDED FRAGRANCE FREE - Trusted by professionals and gentle on your dog’s senses—no overpowering smells.

Advantage Bayer II Topical Flea Treatment is a vet-recommended, fragrance-free solution designed specifically for small dogs (3-10 lbs). It kills fleas through contact within 12 hours and provides up to 30 days of continuous protection. Easy-to-apply, waterproof after 24 hours, and effective against all flea life stages, this 4-dose topical treatment breaks the flea life cycle to keep your dog comfortable and healthy month after month.

Specifications

ASIN	B004QRHSDU
Active Ingredients	Pyriproxyfen and Imidacloprid
Age Range Description	All Life Stages
Allergen Information	Abalone Free
Best Sellers Rank	#101,219 in Pet Supplies ( See Top 100 in Pet Supplies ) #121 in Dog Flea Drops
Brand	Advantage
Brand Name	Advantage
Customer Reviews	4.3 out of 5 stars 2,918 Reviews
Dog Breed Size	Small
Global Trade Identification Number	00724089617071, 10724089367317
Included Components	FLEA TOPICALS
Item Form	Stick
Item Type Name	Bayer Advantage II Flea and Lice Treatment for Small Dogs, 3-10 lb, 4 doses
Item Weight	5 g
Item form	Stick
Item volume	1.6 Milliliters
Item weight	5 g
Manufacturer	Elanco US Inc
Manufacturer Part Number	5420240
Model Number	86336731
Scent	Unscented
Scent Name	Unscented
Target Species	Dog
UPC	724089617071 724089202406
Unit Count	4 Count
Volume	1.6 Milliliters

Reviews

F**Y

Easiest to get help from when needed.

Perfect everytime until it isn't, but it can be fixed immediately with ease!! Thanks to Amazon online line help. Thanks again for such an amazing job 👏!

5.07.2026

T**Y

Great product

This stuff used to work great but seems like now it doesn't work as good but still knocks them down a bit

16.03.2026

M**R

It last

Best product for fleas

27.04.2026

R**L

Didn’t work to well

Didn’t work to well for my pups

16.05.2026

K**Z

Happy

No more itchy dogs

24.03.2026

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3418 Kč

Duties & taxes included

In stock

Sold byAmazon Czech RepublicDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Czech Republic.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Bayer II Topical Flea Treatment Dogs

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Details

Description

Specifications

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Common Questions