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Rated 4.7 out of 5 by 129 reviewers.
Rated 5 out of 5 My picky pup loves it! I have one dog that will eat anything, and the other who will eat around pills - no matter what I put them in! Sentinel is like a treat to him!! He eats it right up! They never got sick from it. They don't have any problems with fleas or anything like that. Definitely recommend! January 27, 2012
Rated 5 out of 5 GR FAMILY We switched to Sentinal a few years ago after getting skin reaction to the topical preparations. With three Goldens, A Mom and two litter mates, we have had no problems except the price is exorbitant, twice that of a similar crewable, Hartguard. August 21, 2011
Rated 5 out of 5 Flea-free Shelties! I highly recommend this product. I give it to my two Shelties, ages three and two and a half, and neither one of them has ever had a single flea. I live in Florida where fleas are a year round problem. August 18, 2011
Rated 5 out of 5 I highly recommend this product. I have two Shelties, one is almost three years old, and the other is two and a half years old. Have never had a flea on either one of them, and I live in Florida, where fleas are a problem year round. August 18, 2011
Rated 5 out of 5 I trust this product I am very pleased with Sentinel and completely trust this product. I used Comfortis for approximately 5 months and both of my dogs had seizures once a month for the 5 months that I gave them the medication. It was awful. After repeated trips to the vet and numerous tests we finally figured out the Comfortis was causing the seizures. I wasn't aware seizures are a possible side affect from that medication. I also tried Frontline and it seemed to really irritate my min pins skin when I applied it so I immediately stopped that. I haven't seen any side affects in either dog from the Sentinel and I have been using it for the past year. I have not seen fleas on either dog either. I'm not sure if certain medications affect certain breeds however I found it odd that both of my dogs suffered seizures approximately one week after the administration of each dose of Comfortis. July 14, 2011
Rated 5 out of 5 Great Product! Love love love Sentinel! Have used it on my Rat Terrier for almost 2 years now and have never had any issues. The convenience of one product for both heartworms and fleas is fantastic! July 12, 2011
Rated 5 out of 5 No side effects I had always used the liquid flea treatment for years on my dogs. The last two dogs I had, toy poodles BOTH developed cancerous tumors. The male used to scratch at the spot where I would put the liquid and it would get red and irritated for a few hours. He was 11 years old and she was almost 15. She tolerated the medicine better, but it still got her in the end. I totally believe its what gave them both cancer. One of the liver the other one his stomach cavity. I have 2 new dogs. They have been on Sentinal for 2 years as of Aug. I have had no problem and I like the fact that it protects for all the parasites and the fleas so I only have to give one pill to each of them once a month. I have not seen one flea on either dog. I highly recommend this product. July 10, 2011
Rated 2 out of 5 Extreme Side Effects I can not recommend this product. I gave it to my Choclate Lab at my vets recommendation. The first tab she took she became lethargic , could not eat within the day. She could not get up. Very hard to find ANY information as to the testing done. Got a refund. I went back to Heartguard and Frontline. I have used them for many years on several breeds with no issue. June 21, 2011
Rated 5 out of 5 Bailey and The Jack Pack I have a beagle and three jack Russells. WE Have used this product for over 5Years. I see an occassinal flea but never had a problem. Would not even try any thing else. May 23, 2011
Rated 5 out of 5 Long-term solution, not a quick fix True, Miss South Carolina, this product does not kill fleas. Fleas live just a short time (a week or so) and reproduce prolifically. This product prevents a flea colony from gaining or maintaining foothold in your home. We have three Jack Russells in a flea-infested, pet-friendly island community and have seen zero fleas on them in the past four years. The flea population where we live has apparently developed an immunity to Frontline as it has little or no effect here. Sentinel took about six weeks to begin showing effect but since then, it has been the complete and total cure we had hoped for. Best thing we have ever used, but it took some patience. April 22, 2011
Rated 5 out of 5 15 year user of setinel Used for 2 dogs large and small breed and had excellent results. I had next door neighbor who had regular flea infestations and my dogs never had an issue...not even visual fleas...even tho my vet does not carry it, in fact it's hard to find a vet who will carry it (contracts with competitors) but I rave about it and despite some vet critics, I highly recommend it January 1, 2011
Rated 5 out of 5 prescription Do I need a prescription when ordering Sentinal for my dog? I know the strength she needs as I have bought it from the vet before. December 12, 2010
Rated 5 out of 5 Charlie & Harry Charlie was our first pet in Florida, a Llahsa Apsa. He lived to be 18yrs. we gave him Sentinel tablets for at least 10 years. It was the best. Today we have a rescue dog, lab & beagle mix. His name is Harry & does not like the topical products so we put him on Sentinel, he thinks they are treats. No mess and no fuss. October 28, 2010
Rated 5 out of 5 Sugar/Bella We have given Sentinel to our pets for the past 25 years. We have never had to worry about our girls using this product. We have had the pleasure of living with six loving girls in the past and now with two new toy poodles. This is a wonderful product!!!!! May 13, 2010
Rated 5 out of 5 Easy and works! I love this. My dogs will eat it no problem and so much easier than messing around with topical solutions. On large dogs the topical meds are hard to apply, you have to spread it over the whole body and it is hard to judge how much to apply to each area, I always have some left over because I am afraid I won't have enough at the end. Also it is difficult to part the hair on very short haired dogs. I made sure the dogs were flea free with Advantage and then started this pill, haven't seen a flea won't kill adult fleas so it is best to get them off first. LOVE PetcareRX paw points and coupons...saving a lot of money, PLUS their prices are the lowest to begin with !!!! April 19, 2010
Rated 2 out of 5 Does Not Kill Fleas Purchasers should be aware that this product will NOT kill the fleas you see on your dog. It sterilizes the fleas and prevents them from reproducing. If you are looking for something that will kill the fleas you see on your dog, you should get Frontline Plus for Dogs. After my vet explained this to me, and online reasearch easily backs it up, I quit using this product since it won't do what I need. December 2, 2009
Rated 3 out of 5 Worked up until now I have three dogs and have been using this product for over a year. I just found fleas on one - she has white hair so it was easy to see them crawling around. I am considering switching back to Heartgaurd and just using a topical flea medication now. August 21, 2009
Rated 5 out of 5 No More Fleas! My dogs are on Sentinel now and Program the year before. Prior to discovering this medication, I tried every available spray, powder and spot treatment without luck. The fleas in South Tampa, Florida can reproduce amazingly fast and nothing worked - until I used Program. Because of it, I switched to Sentinel for the heartworm protection instead of using separate drugs. Both of my dogs love the flavortabs and consider them "treats". It's always good when the dog likes it, right? August 3, 2009
Rated 5 out of 5 Great Product! I've used this product for 2 years now and I love that I do not have to worry about fleas and paracites on my dog. I have never had any issues with my dog bringing any "buddies" from the outside! June 4, 2009
Rated 5 out of 5 great stuff!! I have had my American Eskimo Spitz all of his life (14 years) and have had him on Sentinel tabs from the beginning. It is really a good product and does exactly what it says it will. He has never had one flea, to my knowledge. And of course no sign of heartworm, through all of his testings. Receiving this medication through PetCareRX is faster, cheaper and very reliable. The coupons are a great bonus!! April 22, 2009
Rated 4 out of 5 Schnauzer mom pleased in GA My two dogs are 7 and 8 and have been on Sentinel since birth except for about a years timespan when the vet switched them to Heartgard and Frontline plus because they had had a few tics and the Sentinel isn't for tics. Big mistake! During that time we had a flea infestation. We switched back to the Sentinel and haven't had fleas since. The only problem I have with Sentinel is that one dog loves it and will chew it right out of my hand. The other one avoids it after sniffing it and I have to crush it and put it in some other food that kills the smell for her to eat it. AND, ordering through PetCareRx is easy and less expensive than at the Vet. Keep the coupons coming! September 2, 2008
Rated 5 out of 5 Fast, easy, and personal The people at Pet Care Rx showed that they care about service. I received very personal care and the products I ordered, arrived in record time. The products are exactly as I have purchased at the Vet, but half of the cost. I am very happy, and my four legged friends are happy and healthy...and that is the reason I will only order from Pet Care Rx August 16, 2008
Rated 5 out of 5 Sentinel We have a Sheltie which has a lot of hair! Our vet uses this product on his dogs. We have never had a problem with fleas since using Sentinel ( 10 years ) . To save some money , it would be good to send the product in a padded mailer vs a big cardboad box! I love all the coupons. We saved quite a bit of money and received free shipping! August 16, 2008
Rated 5 out of 5 great product great service Petcarerx has superior customer service and very quick delivery. It is cheaper than buying at the vets. Will visit again! July 7, 2008
Rated 5 out of 5 Sentinel I have had my two yorkies on Sentinel for years and it is the best heatworm/flea control medication I have ever used. One pill does the trick instead of using two separate medications which can result in higher costs. The pill is very tiny making it so easy for even the smallest dog to swallow. June 21, 2008
Rated 5 out of 5 Good product, better price than vet or competitors My two dogs have been on this medicine for about 7 years now without a SINGLE problem. Keeps them flea and heartworm free. I was quoted $80 from my vet for a 6 month supply. With a discount coupon, I just paid $101 including shipping for a 12 month supply! A huge savings! Service was great, they contacted my vet for me and shipped it in a few days. I've previously considered 1-800 Pet Meds, but the prices were never worth it compared to my vet. PetCareRX has changed all that. This is where I'll buy my pet meds from now on. June 15, 2008
Rated 5 out of 5 Best Choice Over the past 15 years we have rescued dozens of speical needs greyhounds and others. We alway depend on Sentinel to keep the dogs and our home environment healthy. I do not know how many hours we spent combing and bathing before this product was introduced. Especilly for former racing greyhounds who are exposed to many tick born diseases and given no prophylactic care. It is exceptional to be able to protect these good animals from so many potential parasites with an easy once a month pill. June 7, 2008
Rated 5 out of 5 Thank You PetCareRx I've purchased Sentinal for my Yorkshire Terriers for years but this is the first time I've used PetCareRx. I placed my order on Monday and received my shipment on Friday....and this included PetCareRx contacting my vet for a prescription. PetCareRx is fast...! June 6, 2008
Rated 5 out of 5 Fit for a Diva Our Maltese Poodle Diva has been on this product since she was a puppy. She has a luxating patella and the Synovi has helped her stay active and without pain for almost 6 years now. It is a super product! May 17, 2008
Rated 5 out of 5 Sentinel is the best Sentinel is the only medicine that I buy for my Dogs. I think it is the best heart worm medicine that you can buy because it also controls fleas & worms. PetCareRx is where I buy everything. They offer a great price & fast shipping. May 10, 2008
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