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Customer reviews

4.6 out of 5 stars
4.6 out of 5
55,382 global ratings
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Advantage II Flea Prevention and Treatment for Large Cats, Over 9 Pounds

Advantage II Flea Prevention and Treatment for Large Cats, Over 9 Pounds

byAdvantage
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Top positive review

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KForbessTop Contributor: Pets
5.0 out of 5 starsREAD THIS
Reviewed in the United States on June 20, 2017
With my review i am going to address points from reviews posted. This review is only based on my personal experiences.
1. Price. Yes, this product is expensive. However, it's absolutely worth it. It works very well and I've always felt that my cats not suffering is more important than the price tag. Also, here on amazon is significantly cheaper than other places. (Saved $20 buying it here instead of 1800petmeds)
2. Balding. There are a few things that need to be known for this product. Make sure you are using the appropriate dose for your cats. Weigh them. Do not assume their weight. If they are on the borderline, use the smaller dose or dont use all of the larger one. Also dont put it all in one spot. Make a line from the back of their neck to their shoulder blades.
3. "Frontline is cheaper and does the same thing". Incorrect! Frontline is cheaper but in order for frontline to work, the fleas have to bite the animals. This product does not require them to be bitten.
4. "Fleas didnt go away." You cannot expect any flea product to completely rid your home of them. It takes a minimum of 3 months to completely get rid of them if you actively fight against the fleas. You need to vacuum your floors and furniture every day at least for awhile. You also need to keep up with your laundry and wash blankets regularly, including your bedding. And its also very important to be spraying your furniture down with flea spray. RAID or Hotshot work wonders for this! Spray your furniture and bedding down every night. I also spray in the crevices of my apartment because fleas like to hide.
5. "Fleas were going everywhere so i had to give them a flea bath." Do NOT do this. Them jumping off your pets is a GOOD thing! That means the product is working. If you bathe them before the product has time to set it, you just wasted your money. This is why you need to be keeping up with prevention in your home. Theyre jumping off your animal because the product is working. Vacuuming, washing, and spraying is what will combat the infestation.

You CANNOT get rid of fleas completely in a short period of time so dont expect a miracle. That's where people get disappointed. Let the product do its job and play catch up for the next few months. And make sure you're keeping up with the doses!!
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1,894 people found this helpful

Top critical review

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C. Herard
1.0 out of 5 starsI’ve been using this product for many years with good results and no problems
Reviewed in the United States on March 8, 2018
My complaint is not with the product in general, but with the seller. I’ve been using this product for many years with good results and no problems. However this recently received batch is bad. The silver packages that hold the vials arrived flat, and the vials open way too easily. This batch is not killing fleas, and (for the first time ever) has burned my cat’s neck and caused the hair to fall out. I don’t know if I got a bad batch, if it was stored improperly prior to shipment, or if they have been tampered with, but I am not happy and would like a refund.
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434 people found this helpful

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From the United States

KForbessTop Contributor: Pets
5.0 out of 5 stars READ THIS
Reviewed in the United States on June 20, 2017
Size: 6-PackStyle: Large Cat OnlyVerified Purchase
With my review i am going to address points from reviews posted. This review is only based on my personal experiences.
1. Price. Yes, this product is expensive. However, it's absolutely worth it. It works very well and I've always felt that my cats not suffering is more important than the price tag. Also, here on amazon is significantly cheaper than other places. (Saved $20 buying it here instead of 1800petmeds)
2. Balding. There are a few things that need to be known for this product. Make sure you are using the appropriate dose for your cats. Weigh them. Do not assume their weight. If they are on the borderline, use the smaller dose or dont use all of the larger one. Also dont put it all in one spot. Make a line from the back of their neck to their shoulder blades.
3. "Frontline is cheaper and does the same thing". Incorrect! Frontline is cheaper but in order for frontline to work, the fleas have to bite the animals. This product does not require them to be bitten.
4. "Fleas didnt go away." You cannot expect any flea product to completely rid your home of them. It takes a minimum of 3 months to completely get rid of them if you actively fight against the fleas. You need to vacuum your floors and furniture every day at least for awhile. You also need to keep up with your laundry and wash blankets regularly, including your bedding. And its also very important to be spraying your furniture down with flea spray. RAID or Hotshot work wonders for this! Spray your furniture and bedding down every night. I also spray in the crevices of my apartment because fleas like to hide.
5. "Fleas were going everywhere so i had to give them a flea bath." Do NOT do this. Them jumping off your pets is a GOOD thing! That means the product is working. If you bathe them before the product has time to set it, you just wasted your money. This is why you need to be keeping up with prevention in your home. Theyre jumping off your animal because the product is working. Vacuuming, washing, and spraying is what will combat the infestation.

You CANNOT get rid of fleas completely in a short period of time so dont expect a miracle. That's where people get disappointed. Let the product do its job and play catch up for the next few months. And make sure you're keeping up with the doses!!
Customer image
KForbess
5.0 out of 5 stars READ THIS
Reviewed in the United States on June 20, 2017
With my review i am going to address points from reviews posted. This review is only based on my personal experiences.
1. Price. Yes, this product is expensive. However, it's absolutely worth it. It works very well and I've always felt that my cats not suffering is more important than the price tag. Also, here on amazon is significantly cheaper than other places. (Saved $20 buying it here instead of 1800petmeds)
2. Balding. There are a few things that need to be known for this product. Make sure you are using the appropriate dose for your cats. Weigh them. Do not assume their weight. If they are on the borderline, use the smaller dose or dont use all of the larger one. Also dont put it all in one spot. Make a line from the back of their neck to their shoulder blades.
3. "Frontline is cheaper and does the same thing". Incorrect! Frontline is cheaper but in order for frontline to work, the fleas have to bite the animals. This product does not require them to be bitten.
4. "Fleas didnt go away." You cannot expect any flea product to completely rid your home of them. It takes a minimum of 3 months to completely get rid of them if you actively fight against the fleas. You need to vacuum your floors and furniture every day at least for awhile. You also need to keep up with your laundry and wash blankets regularly, including your bedding. And its also very important to be spraying your furniture down with flea spray. RAID or Hotshot work wonders for this! Spray your furniture and bedding down every night. I also spray in the crevices of my apartment because fleas like to hide.
5. "Fleas were going everywhere so i had to give them a flea bath." Do NOT do this. Them jumping off your pets is a GOOD thing! That means the product is working. If you bathe them before the product has time to set it, you just wasted your money. This is why you need to be keeping up with prevention in your home. Theyre jumping off your animal because the product is working. Vacuuming, washing, and spraying is what will combat the infestation.

You CANNOT get rid of fleas completely in a short period of time so dont expect a miracle. That's where people get disappointed. Let the product do its job and play catch up for the next few months. And make sure you're keeping up with the doses!!
Images in this review
Customer image Customer image Customer image
Customer imageCustomer imageCustomer image
1,894 people found this helpful
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DanielleTop Contributor: Gardening
4.0 out of 5 stars Possible Bad Batch of Flea Medication which causes bad side effects!
Reviewed in the United States on January 6, 2018
Size: 6-PackStyle: Large Cat OnlyVerified Purchase
I'm leaving my original review below and only giving 4 stars at this time. Unlike the Hartz version which killed one of my cats and didn't pick up on it till it almost killed my other cats, Advantage just had a bad batch when I wrote the review below. At this time, I'm still willing to trust them and as you can see, purchased another set and have applied it to all 4 of my cats and have been watching them constantly, except to write this review. So far, no bad effects, and the best effects since I have been using this product, is no flea infestations. As clean as I am, there are always spots we miss where they can breed, so putting this on your cats, and the cats going into those hard to reach areas, gets this insecticide in those areas preventing a re-infestation. About every 4 months, I swap between advantage and use revolution. This is because revolution which at this time can only be prescribed by a veterinarian, can cover areas that these other versions cant, like tapeworm which your cat can easily get from swallowing a flea while cleaning itself. If you get a vet who tries telling you your required by law to have a heartworm blood test done before they will prescribe this, especially in CA, remind them there is no such law, and that there are prosecutors who are going after doctors who deliberately tell their customers there are such laws, which in California is a fact. I'm not saying not to ever get a heartworm test done, just don't ever let a vet force a test on you in order to get a flea product. I use Advantage for 4 months in a row, then on the 5th month, use revolution. It's not a good idea to use revolution constantly, because fleas can become immune to the insecticide if done so. By the way, if you do have flea problems and are using this, or another product, I highly recommend using a bug repellent that's safe for children for a few days, because the fleas that will jump off the infected pets, will try for other hosts before they die, and using a safe product on yourselves, and children will help prevent getting bitten as well. I started doing this after I noticed we all were getting bitten after the pets got treated, especially in the spring and summer time. I'm not recommending any names because when it comes to my children, I asked their doctor first. You should do the same.
Old review:
If you bought this product recently and it has lot# KPDBNWK NPDBJ1C I would highly recommend not using it and rerunning it to wherever you bought it from. We have used this brand and type for a long time, and a shipment with this lot that we just received had some serious effects on all 3 cats it was applied to who have been on it for over 2 years. 15 minutes after it being applied to the back of each cats neck, they began foaming and became lethargic and due to serious issues with Hartz products, had experience in quickly rectifying the issue before serious harm happened, which was to quickly rinse each cat with warm water with soap from a shower, not cold, and not a bath, as the medication is oil base and dipping a cat in a tub of water would just reapply it as they came out. Getting the flea medication off with soapy water using a shower is the first step, Second step is to make sure if the cat ingested any, to get something into their stomach to absorb. dilute and lessen the damage be it their favorite cat food, but to also get them to drink a lot of water which can be done by mixing some tuna oil in a bowl of water. Watch the cat and Highly recommend contacting your vet just to be safe.
320 people found this helpful
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C. Herard
1.0 out of 5 stars I’ve been using this product for many years with good results and no problems
Reviewed in the United States on March 8, 2018
Size: 6-PackStyle: Large Cat OnlyVerified Purchase
My complaint is not with the product in general, but with the seller. I’ve been using this product for many years with good results and no problems. However this recently received batch is bad. The silver packages that hold the vials arrived flat, and the vials open way too easily. This batch is not killing fleas, and (for the first time ever) has burned my cat’s neck and caused the hair to fall out. I don’t know if I got a bad batch, if it was stored improperly prior to shipment, or if they have been tampered with, but I am not happy and would like a refund.
Customer image
C. Herard
1.0 out of 5 stars I’ve been using this product for many years with good results and no problems
Reviewed in the United States on March 8, 2018
My complaint is not with the product in general, but with the seller. I’ve been using this product for many years with good results and no problems. However this recently received batch is bad. The silver packages that hold the vials arrived flat, and the vials open way too easily. This batch is not killing fleas, and (for the first time ever) has burned my cat’s neck and caused the hair to fall out. I don’t know if I got a bad batch, if it was stored improperly prior to shipment, or if they have been tampered with, but I am not happy and would like a refund.
Images in this review
Customer image
Customer image
434 people found this helpful
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Mr. Rellik
1.0 out of 5 stars Our cat died from this horrible product...
Reviewed in the United States on December 16, 2018
Size: 2-PackStyle: Large Cat OnlyVerified Purchase
This product killed our pet. We are heartbroken. He began to act strange, lost all playfulness and appetite, within a day of taking it, and died shortly after. We applied it EXACTLY as instructed and our cat was given the correct dose for his weight. I would never use this product again. Our indoor cat was adopted from the local shelter and came to us infested with fleas - I don't know what else is available to treat fleas, or if other brands might be better, but as horrible as fleas are (we were all getting bites daily) I would NOT use this again. It sure did kill the fleas - and took our pet with it. TOXIC. BEWARE.
268 people found this helpful
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GMPullman
1.0 out of 5 stars After Years of Use, Now I have Problems!
Reviewed in the United States on January 16, 2018
Size: 6-PackStyle: Large Cat OnlyVerified Purchase
Something has changed in the formula? I've been treating my six cats successfully with Advantage for at least the past ten years. Just last night it was time for their treatment again. This morning I noticed one cat, ten-year-old Mr. Wilson, had a missing patch of fur (about 2 x 3 cm) exactly where I had applied the Advantage! Why all of a sudden this reaction?

Another big, recent annoyance is that each capsule would not open properly the way it is supposed to. After inverting the cap and twisting, the small plastic "pin" snaps off but still leaves the ampule sealed. Rotten quality control! Pay more money for less quality. Why did Bayer quality go down the drain?
I'm going to the vet to ask for recommendations (NOT another Bayer product!)
Lot No. KP0BNWK KP0BJ1C
Customer image
GMPullman
1.0 out of 5 stars After Years of Use, Now I have Problems!
Reviewed in the United States on January 16, 2018
Something has changed in the formula? I've been treating my six cats successfully with Advantage for at least the past ten years. Just last night it was time for their treatment again. This morning I noticed one cat, ten-year-old Mr. Wilson, had a missing patch of fur (about 2 x 3 cm) exactly where I had applied the Advantage! Why all of a sudden this reaction?

Another big, recent annoyance is that each capsule would not open properly the way it is supposed to. After inverting the cap and twisting, the small plastic "pin" snaps off but still leaves the ampule sealed. Rotten quality control! Pay more money for less quality. Why did Bayer quality go down the drain?
I'm going to the vet to ask for recommendations (NOT another Bayer product!)
Lot No. KP0BNWK KP0BJ1C
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Customer imageCustomer image
441 people found this helpful
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Jordan
5.0 out of 5 stars Guaranteed to fight back against fleas and give them a long, slow death.
Reviewed in the United States on August 7, 2019
Size: 2-PackStyle: Large Cat OnlyVerified Purchase
Fantastic.

Absolutely fantastic.

I bought a 2-pack of Advantage II for large cats, and a 2-pack for small cats. Applied the correct ones to my cats as soon as the product arrived. I then vacuumed the entire house, threw the cat's blankets in the wash with hot water, and lint rolled the furniture.

A few hours later, one of my cats was chilling on my computer table, and I noticed that he was staring intently at something on the tabletop. I took a closer look, and there was an adult flea struggling, twitching, and spinning around and around on the table. It died a few minutes later, and my cat stared it down the entire time with not a hint of remorse in his eyes.

It's now day 2, and there's BARELY any frantic licking or scratching. I ran a flea comb through both of my cats, and there's nothing. I found 3 baby fleas in total, they were acting abnormally, not jumping off the comb. But instead, kicking their legs weakly. I dunked the comb in a mixture of water and Dawn dish soap, and finished them off.

Both of my cats are now calm, more playful, and more peaceful. My small cat would often play too aggressively with my large cat, almost to the point of a full on fight. But ever since I used this, tensions have decreased dramatically. They still play, but they somehow now know their boundaries and don't get too rough. Maybe these fleas were driving them to the point of insanity.

This is an excellent product. Yes, it's expensive, but if you care about the health and well-being of your kitties, then I recommend you buy it now.
40 people found this helpful
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Sarah K
5.0 out of 5 stars Good for Prevention!
Reviewed in the United States on January 3, 2018
Size: 2-PackStyle: Large Cat OnlyVerified Purchase
I noticed one single flea on my cat while brushing her. I checked the rest of her body, and she had zero signs of anymore fleas, flea poop, etc. I use to work in a pet grooming salon, so I know how to thoroughly check for fleas. I have an indoor cat. I decided to be on the safe side and pick up some Advantage II for flea prevention. I remembered Advantage always worked better (over Frontline) for my clients back in my grooming salon days. Instructions were clear. Application was easy. Leaves a greasy mark, but don't worry that greasy residue goes away after 24 hours. So far no fleas on my cat! Whether because it really was one single flea that somehow got brought into the house or the Advantage prevented an infestation, I don't know. Regardless, better safe than sorry. Advantage is all I did for my cat (no bath, etc.), as I didn't feel other steps were necessary since she didn't have an infestation. Please note that Advantage works best for PREVENTION. If your cat actually has a flea infestation, please also give your cat a flea bath, consider giving your cat something that works right away like Capstar, vacuum your carpets, wash pet bedding, and then give Advantage for further prevention (pre-emerged adult fleas can live without a host for over 100 days).
60 people found this helpful
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Sarah
1.0 out of 5 stars BURNED MY BABY
Reviewed in the United States on April 25, 2018
Size: 6-PackStyle: Large Cat OnlyVerified Purchase
After years of using this product (Bayer Advantage II for Large Cats over 9 lbs) on my big kitty, with NO problems, the last application left my baby with a burn mark exactly where I applied the medication - in a long line down the back of his neck, exactly as it's supposed to be applied. They must have changed the formula, as it was also yellowish in color and had a slight odor. Paid TOO MUCH money to have this happen. Now I have to throw away the rest of the applications I bought, and I bought 2 packs of 6 to prepare for the months to come. Super annoyed, and now I have to find something else that works. Why do they have to mess with something that worked?! WASTE of money.
188 people found this helpful
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DeeJayBee
1.0 out of 5 stars We now have fleas
Reviewed in the United States on March 8, 2018
Size: 6-PackStyle: Large Cat OnlyVerified Purchase
I have used this product religiously every month purchased from a Pet store and my cats never had fleas. Since I bought 3 mos worth (for 2 cats) from here I had seen them scratching and this morning I saw a live flea in my house...which means there are many more. I am disgusted with myself that I did not continue to buy from pet retailer as I never had this problem before. I believe this product was counterfeit.
165 people found this helpful
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Pam Seabolt
5.0 out of 5 stars It works!!!!
Reviewed in the United States on August 29, 2019
Size: 1-PackStyle: Large Cat OnlyVerified Purchase
My *indoor* cat had fleas bad. She was laying around miserable, tearing huge clumps of her hair out and having a really hard time of it. One spot treatment didn’t work, another made her sick. I was afraid to try again but was desperate, something had to give. After reading the reviews, I bought a single tube. It worked!!!! It didn’t make her sick (made her pretty angry but she hates the spot treatment being applied. She got over it. ), it killed the fleas and now, two treatments in, her hair has grown back in thick and glossy and soft. This stuff works!!!
Customer image
Pam Seabolt
5.0 out of 5 stars It works!!!!
Reviewed in the United States on August 29, 2019
My *indoor* cat had fleas bad. She was laying around miserable, tearing huge clumps of her hair out and having a really hard time of it. One spot treatment didn’t work, another made her sick. I was afraid to try again but was desperate, something had to give. After reading the reviews, I bought a single tube. It worked!!!! It didn’t make her sick (made her pretty angry but she hates the spot treatment being applied. She got over it. ), it killed the fleas and now, two treatments in, her hair has grown back in thick and glossy and soft. This stuff works!!!
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