BayerAnimal Health Advantage II Extra Large Dog 6-Pack

as long as you apply it twice a month.

I used to work at a vet clinic, with resident pets and rescues. They treated the pets monthly, always with Advantage II. It's the most effective OTC product for killing fleas (as well as larva and eggs, so you don't have to worry about more hatching). I buy the XL Dog size and split the doses between a large dog and 2 cats. Treat your pets every 28 days or so and you'll never have to worry about an infestation in your home.

had a flea problem that frontline couldn't seem to stop, its been 3 weeks now and my little dog is growing back her fur that she had lost because of the fleas, vet said I could reapply after 2 weeks if needed, but so far so good

I have been using advantage products for over 10 years and both cats and dogs and it works wonderfully! Both the cats and dogs were located in the south where there are a lot of sand fleas and ticks. Never one single problem. All the hype about fleas becoming immune to it, is just hype to encourage you to buy ingestible poison for your dog to eat to kill the fleas. Commonsense alone should tell you there’s something wrong with that picture…

I’m not sure if they have changed the formula, but this no longer works against fleas. I can apply properly and see healthy fleas days later. I use it to supplement my Advantage Multi and the dogs that get regular Advantage II have fleas. Dogs that get Advantage Multi have none. Disappointing as I’ve used for years.

This product is as advertised and used on our dog.

Fleas are gone with this product...its great

Put it on my cats a couple days ago and it seems to be working pretty well. I followed the recommendation of the other posters on here and my cats didn't hurl up their intestines, so that's a good thing. We'll have to wait and see in another week if there are any fleas left. Will post again then and give update.