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Kills Fleas |
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Repels Fleas |
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Kills Flea eggs and Larvae |
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Prevents Development | Prevents development |
Kills Ticks |
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Repels Ticks |
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Kills and/or Repels Mosquitoes |
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Prevents Heartworm |
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Other Parasites Information | Chewing lice for up to 30 days. | Controls ear mites, roundworms and hookworms. | |
Waterproof (shampooing once a week can reduce effectiveness) | NA |
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Safe for pregnant or nursing Pets | Consult with your veterinarian before using this product on debilitated, aged, pregnant or nursing animals. |
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How long does it take to work | Starts killing fleas in 30 minutes, and kills 98-100% of fleas in 12 hours. | Starts working in 1 hour | See a greater than 90% control of your flea infestation during the first month but because adult fleas will emerge from cocoons in your environment, you may see a few fleas for several months until the flea population is destroyed. |
Taste | Topical application | Applied to skin | Applied to Skin |
Active Ingredient(s) | Spinetoram | Fipronil | Selamectin |
RX Required |
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Dosage | |||
Usage |
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Video | Coming soon | Coming soon | Coming soon |
Vet Review | Fleas are easily the most common external parasite that plague cats throughout the country. Fleas have been shown to not only cause weakness and anemia in affected cats, but also transmit dangerous infectious diseases, including bartonellosis, an also increasing threat to humans. Cheristin is made with the same main ingredient as Comfortis for cats, and acts uniquely on the nervous system of the flea. Unlike flea prevention tablets, Cheristin starts killing fleas within 30 minutes and almost 100 percent of fleas within 12 hours. With the easy to use applicator, this product has been shown to be quite effective for one month. The most common, yet rare side effect I have seen in cats is an allergic reaction or hair loss at the site of application, and even less commonly vomiting and lethargy. It is an excellent and fast acting, effective product with an overall rating of a 4.5 with an ease of administration of a 5. | This reliable and more economical alternative to Frontline comes from a very reliable company, Elanco. Its main ingredient, fipronil, probably has the most clinical record of experience of efficacy over many years, in killing both adult fleas before they lay eggs, as well as various species of ticks. Its safety is touted by supposedly targeting only the nervous system of the pests. With cats, we always must be careful when evaluating the newer generation of emerging pesticides for fleas and ticks that are coming out, as kitties' detoxification pathways are typically more sensitive than dogs'. Most kitties tolerate this single spot application quite well. In addition to being waterproof, so important for outdoor kitties, this product is easier to apply than most competitors, as well as leaving no pungent or chemical smell like many over the counter competitor products. Most of my clients have found it as effective as Frontline, but not as quick as Advantage. Some clients have complained that it does not seem to repel the ticks, who can occasionally be found attached to the skin before they die. Not only it is important in using products like Easy Spot to prevent flea bite anemia in cats, and unsightly tapeworms, but in recent years, fleas have been shown to carry an increasing number of serious diseases and infections, including Bartonella species, amongst others. Another benefit of this product is that it is labeled as safe to use in pregnant or nursing cats. Side effects, although rare, may include topical irritation at the site of application, lethargy, as well as rare twitching reactions, agitation, and/or restlessness. These are typically short-lived, and fortunately, are very uncommon across pet populations that the product has been used. Some veterinarians and experts have wondered about the recent resistance of fleas to some of the fipronil-based products, but that has not been my experience. I give this product an overall rating of a 4, with an ease of application and efficacy of 4, as well. | This versatile topical product has the widest range of protection of both internal and external parasites. In both cats and dogs, all 3 stages of the flea life cycle are effectively controlled,in addition to ear mites. For dogs, there is also the wonderful treatment benefit of killing hidden scabies mites on the skin, which are so difficult for veterinarians to find on routine skin scrapings at our offices. In fact, when either I or veterinary dermatologists are presented with a very itchy dog, in addition to our allergy workups, we will often treat with this topical every few weeks to treat and rule out any hidden scabies mites contributing to the pet's itching. It is amazing how many dogs will respond to this treatment, leading me to believe that scabies mites are involved with a lot more itching problems in dogs than I first learned about in vet school. With the increased recognition and understanding of feline heartworm disease, this is often the first heartworm preventative that I will reach for in cats, especially given all of the other benefits above. While it is often effective for canine heartworm prevention as well, I have heard of rare lapses in protection, so I usually combine this topical in dogs with one of the oral heartworm prevention medications like Heartgard or Interceptor. The only disadvantage I have seen is the rare reaction on cats of mild digestive upset and temporary hair loss at the site of application. It also has the wonderful benefits of being water proof in only 2 hours after application, and in being approved for use in puppies as young as 6 weeks of age. |