How long does it take to kill fleas?

This didn’t kill the fleas at all. I spent $40 and it was a complete waste but the worst thing was my Bichon had a terrible reaction. He became extremely sleepy and lost most of the feeling in his back legs. It couldn’t pee or poop for 3 days. I was so scared !! It finally wore off but I will never buy this again. Ever!

How can I guarantee that this legitimate Frontline product, given the numerous complaints/reviews of counterfeit product purchased on Amazon?

All I can say is I'll buy these at Walmart or my vet. Advantage 2 then Frontline and my smalldog is full of fleas. I've never had this issue and have been using it for years. Especially the Frontline, it is a real JOKE! Like putting plain water on them. I believe these products are knock off products and someone is getting rich.

My dogs still have fleas after treatment, is this because there are fleas still in the carpet/bedding? Do I need to treat those as well?

The best way is to treat everything carpet, bedding, yard. If you do nothing at all it will take at least 4 months for this product to get the flea infestation in check. You must put this on your pet year round not just during the summer as fleas live in your house as well as it is a even temp all year long.

what if I see a flea on the dog?

If your dog goes outside they can be a taxi for the flea to come into the house. The fleas and ticks only die IF they bite the animal. Our dogs have not had ticks attached to them (from being bit), but they do carry the ticks into the house and we have to grab them before they get on furniture or a person. If they dont bite the dog, they wont die

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FRONTLINE Plus Flea and Tick Treatment for Small Dogs Upto 5 to 22 lbs. 6 Treatments

FRONTLINE Plus Flea and Tick Treatment for Small Dogs Upto 5 to 22 lbs. 6 Treatments

Product ID: 715436039

Details

Active Ingredients
Fipronil
Brand
Frontline
Item form
Liquid
Item weight
0.1 Pounds
Scent
Unscented

⏳30-day continuous protection

💧Waterproof formula

🦠Kills fleas, eggs & larvae

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AR$265539

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🐾 Stay ahead of pests, keep your small dog unstoppable!

MONTH LONG DEFENSE - One easy monthly dose shields your pup for a full 30 days—never miss a beat in flea & tick protection.
PUPPY SAFE SIMPLE - Gentle enough for puppies 8 weeks and up, with a no-fuss single-spot application that covers the whole body.
WATERPROOF ACTIVE - Water-resistant formula stays effective even after baths or rainy walks—because your dog’s protection shouldn’t pause.
TRUSTED FOR 20 YEARS - Veteran pet owners swear by FRONTLINE’s proven track record—join the millions who never compromise on pet care.
COMPLETE LIFE CYCLE KILL - Targets adult fleas, eggs, larvae, and ticks to break infestations before they start—total pest control.

FRONTLINE Plus Flea and Tick Treatment for Small Dogs offers a fast-acting, waterproof topical solution that kills fleas, flea eggs, larvae, chewing lice, and ticks for a full 30 days. Formulated with fipronil and (S)-methoprene, it breaks the flea life cycle and is safe for puppies 8 weeks and older weighing 5 to 22 lbs. Trusted by pet owners for over 20 years, this easy-to-apply treatment continuously replenishes through sebaceous glands, ensuring lasting protection even if your dog gets wet.

Specifications

ASIN	B0002J1FLW
Active Ingredients	(S)-methoprene, Fipronil
Age Range Description	All Life Stages
Allergen Information	Allergen-Free
Brand	Frontline
Brand Name	Frontline
Customer Reviews	4.5 out of 5 stars 10,330 Reviews
Dog Breed Size	Small
Included Components	Package includes 6 applicators
Item Form	Liquid
Item Type Name	Flea and Tick Treatment for Dogs Small Dogs
Item Weight	0.1 Pounds
Item form	Liquid
Item volume	9 Milliliters
Item weight	0.1 Pounds
Manufacturer	Boehringer Ingelheim Animal Health
Manufacturer Part Number	292916
Model Number	74273
Scent	Unscented
Scent Name	Unscented
Target Species	Dog
UPC	717077006629 350604288008
Unit Count	6 Count
Volume	9 Milliliters

Reviews

O**W

Not Very Good!

4.04.2026

S**D

Very Pleased

3.05.2026

K**R

Flea

10.05.2026

A**O

Satisfied

7.05.2026

D**E

Easy to use

4.05.2026

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