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Activyl - Sentinel
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Activyl
Sentinel
Kills Fleas checkmark X mark
Repels Fleas X mark X mark
Kills Flea eggs and Larvae checkmark Prevents Development
Kills Ticks X mark X mark
Repels Ticks X mark X mark
Kills and/or Repels Mosquitoes X mark X mark
Prevents Heartworm X mark checkmark
Other Parasites Information NA Controls adult hookworms and removes and controls adult roundworms & whipworms
Waterproof (shampooing once a week can reduce effectiveness) checkmark N/A
Safe for pregnant or nursing Pets X mark checkmark
How long does it take to work Reapply Activyl every 30 days. Begins to work Immediately, However, pre-existing flea populations may continue to develop and emerge.
Taste Applied to skin Beef Flavor
Active Ingredient(s) indoxacarb Milbemycin Oxime/Lufenuron
RX Required X mark checkmark
Dosage
Usage Activyl Usage Sentinel Usage
Video /images/products/video/petmeds-heartworm-disease-sentinel.flv
Vet Review Another recently available new topical flea preventative for dogs and cats. This new product works by being activated by only the flea's enzyme systems into a flea specific mechanism which paralyzes and kills the adult flea. The company claims that it does not get into the blood stream, but stays only in the superficial skin layers of the pet. Any adult fleas which come into contact with this product are quickly killed so that fleas do not have to actually bite the pet, which is tremendously helpful in those flea-allergic pets, where it only takes a few flea bites to set off an extensive itchy allergic reaction. Another wonderful benefit of this product is that it is waterproof, which is especially helpful in those active outside pets who are exposed to rain or like to swim. This effective product starts working within 12 hours of application, where over 90% of adult fleas are killed. Another excellent benefit of this product is that it also inhibits the development of flea eggs and larvae in the environment, which is a big bonus since much of the flea life cycle occurs in the home environment. While Activyl is very safe and effective for most pets, I have seen occasional rare reactions in sensitive pets, which most commonly is seen as irritation or excessive itchiness at the site of application. While the company says that it is odorless, some of my clients have said that they do sense an odor within the first several days of application, as well as leaving an occasional oily film for the first day or two following application. This film, however usually quickly disappears. The only other very rare reactions include digestive upset and/or drooling/neurological reactions, and certainly if a pet has any chronic digestive weaknesses or history of seizures, etc then the local veterinarian should be consulted before applying the product. I give this product an overall rating of 4, with an ease of use of 4. Sentinel is a wonderful combination of the heartworm prevention pill interceptor and the flea control product program both in this one pill.  Many clients enjoy the convenience of having such broad acting internal and external parasites in one pill, without having to worry about giving two separate medicines.  Lufenuron, which is the main flea control ingredient, stops the flea life cycle in its track at the egg and larval stage, thus being like a birth control pill for fleas who get on our pets. Given that the main problem of fleas is how rapidly they reproduce, this pill literally stops escalating growth of flea populations, before they can become established in our homes, where most of the flea life cycle occurs.  The main disadvantage to this product is that it does not kill or repel adult fleas, so in situations with already established heavy infestations, it is best combined with a great topical product like advantage or front line or with the oral adulticide flea pill Capstar for maximal effect.  The only other rare disadvantage I see is the slight increase in reactions when two products  are  combined into one like this, but fortunately this is not common in clinical practice. With milbemycin for prevention of heartworms and controlling and treating most common intestinal worms, I overall highly recommend this versatile product.
Our expert panel consists of licensed veterinarians and the knowledgeable staff of PetMed Express, Inc. d/b/a 1-800-PetMeds. Neither the Company nor any of its employees or consultants make any warranties, expressed or implied, or representations about the accuracy or completeness of the content or the content of any site or external sites. Likewise, no legal liability or responsibility is assumed for the accuracy or completeness of any information, or usefulness of products discussed. While every effort has been made to accurately represent the qualities and characteristics of each product, which for the most part were taken directly from the websites of the manufacturers, we are not responsible for any errors. The information presented is for educational purposes only and is intended to be a supplement to, and not a substitute for, the expertise and professional judgment of your veterinarian. The information is NOT to be used for diagnosis or treatment of your pet. You should always consult your own veterinarian for specific advice concerning the treatment of your pet. The information is not intended to cover all possible uses, directions, precautions, warnings, allergic reactions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for your pet. It is not a substitute for a veterinary exam, and it does not replace the need for services provided by your veterinarian. Note: Any trademarks are the property of their respective companies.

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