Bayer K9 Advantix II, Medium Dogs, 11 to 20-Pound, 6-Month

En la caja vienen 6 pipetas, como se indica en la descripción: 4 de ellas vienen en el sobre hermético de la propia caja y las otras 2 vienen sueltas (la caja realmente es de 4). Contenta con la calidad de Advantix, no me arriesgo a probar con otra marca. Muy recomendado por la relación calidad-precio.

I have used this product over the years, on 5 different dogs (Yorkies and Silky Terriers). All have been house dogs but they are around relatives' and neighbors' dogs frequently and are outside in our backyard or on walks often. I have never seen a flea, even though some months I have completely forgotten to apply the product. In more than 20 years, I think we have had a dog show up no more than 3-4 times with a tick crawling on it or barely attached (probably during one of those months I forgot to apply). I really like using K9 Advantix II because 1) it works 2) it's easy to apply one a month) 3) dogs don't mind it and it's non-irritating to their skin and 3) it's a topical application and not some drug the dog has to take. You do have to wait 24 hours after applying to bathe the dog.

Last year I adopted a puppy and took him to work with me every day for the next 8 months. The company I worked for in San Francisco is dog-friendly, and there were upwards of 100 dogs in the building on any given day. Since much of the building is carpeted, fleas were definitely an issue and pretty soon my pup had them. I used Frontline and treated my apartment and the carpet around my desk at work with both diatomaceous earth and something to kill the eggs, but 2 weeks later, he had picked them up again. I waited one more week, applied Frontline again, and within two weeks he was infested again. A co-worker told me his wife is a vet tech and according to her, fleas in some areas are becoming immune to Frontline. I wish I could tell you whether it's NorCal or SoCal that had the Frontline-immune fleas, but I was traveling back to L.A. every weekend during this period so it's possible he was picking them up there too... though not as likely, as his exposure to other animals on weekends was minimal. On the advice of a friend who swears by Advantix II, I switched to using it and voila! No more fleas. It definitely worked, and quickly. I was convinced. BUT, last night I used it on my younger dog for the first time this year, and the new dog we adopted in December. I used the size-appropriate dose for each. The new, smaller dog (7 lbs) seems fine but my younger dog (around 15.5 lbs) has been really agitated and distressed since then, and is biting at his tail and seems to be unable to get comfortable. He's not crying or whining, but he's alternating between hyper and agitated or clingy. He's also been panting occasionally despite his short summer haircut and the air-conditioned house. He doesn't seem to be in any pain but something's up. Assuming nothing escalates and he seems to feel better, I'll use this again because it's better than a flea infestation, but I would only recommend this with the caveat to watch your dog very carefully after application. Edited to add: As it turns out, my dog was fine and I'm pretty sure his behavior is because it was itchy - he went to the groomer earlier that day, and my theory is that the natural oils in his skin had been stripped away. When it's time for him to be treated again I'll make sure to wait a few days after the grooming.

I started using these in 2009 when my first dog got infested with fleas from the carpet in our new home. We tried other things, collars, baths, drops, but my cousin recommended the K9 Advantix II. SEVENTEEN years and the more dogs later, and none of my dogs have ever had another problem with fleas or ticks again.

I live in the south and this works great. I will continue to use on my dog.