![]() ![]() ![]() What does it kill? Heartworm preventative kills adult fleas, roundworms, hookworms, whipworms, and sarcoptic mange.More information can be found here: or.Availability: Over the counter at PetCo or PetSmart or at your veterinarian.When you shouldn’t use it (Called “Contraindications”): Any known sensitivity to the ingredients.You can read more about it from the EPA here and by Mother Jones here. Cons: Topical only doesn’t kill ticks at all! Imidacloprid is a neonicotinoid, and has been associated with killing bees in the environment (when used for crop dusting, etc.), so I prefer not to use it for environmental reasons, personally (but I’m crunchy and eco-friendly that way).Pros: Kills fleas quickly for dogs > 7 weeks of age for cats > 8 weeks of age kills lice too (rare in dogs).How effective is it? Kills 98% fleas within 12 hours in cats, by day 28, only 73% of re-infested fleas were killed within 48 hours (in one study).Pyriproxyfen (0.44%) is a potent insect juvenile hormone that affects normal development of flea development. How does it work? Imidacloprid acts like nicotine and disrupts the nervous system of the insect.Active ingredient: An insect growth regulator (IGR) called imidacloprid (9.1%) and pyriproxyfen (0.46%), a potent insect juvenile hormone that affects normal development of flea development.What does it kill? Kills fleas for cats and dogs.When you shouldn’t use it (Called “Contraindications”): Should never be applied to cats!.Cons: Large topical volume to apply toxic to cats with dogs and cats living together, cats should be separated from dogs until the product is completely dried on the dog.Pros: Kills fleas quickly due to the high concentration permethrin, provides a repellant in addition to killing ticks.How effective is it? Kills fleas within 8 hours kills and repels ticks for 30 days.How does it work? Inoxacarb is an oxadiazine insecticide that blocks insect sodium channels and results in neurologic signs in the insect permethrin is a chemical that affects the sodium channels in the neurologic system of the insect.Active ingredient: Inoxacarb and a high concentration permethrin.What does it kill? Kills fleas and kills and repels ticks for dogs NOT to be used in cats.When you shouldn’t use it (Called “Contraindications”): Any known previous reactions to it.Cons: Doesn’t provide any tick preventative.Pros: Kills fleas quickly good for pet owners who can’t pill their cat can be used in dogs and cats > 8 weeks of age can be used for dogs > 4 pounds and cats > 2 pounds).How do you apply it? Topically onto the skin, waterproof.How effective is it? Kills fleas within 8 hours lasts for 30 days.How does it work? Inoxacarb is an oxadiazine insecticide that blocks insect sodium channels and results in neurologic signs in the insect this ingredient was originally developed to control pests on food crops.What does it kill? Kills fleas for dogs and cats.Collars: can cause irritation at the site of the collar can accidentally be chewed on and ingested (resulting in a potential poisoning or foreign body) can be poisonous if accidentally ingested (e.g., amitraz) can rarely fall off or get caught.Orals: often delivered in a tasty medication can occasionally cause stomach upset in sensitive animals rarely can cause vomiting.Topicals: can result in secondary exposure to other species can cause a topical reaction in sensitive animals rarely can cause hair loss (temporary) at the site of application ease of administration for pet owners who can’t pill their pet.When in doubt, it depends on the exposure to other species (e.g., cats, children, rabbits) via secondary contact, comfort level, ease of administration (e.g., some cat owners can’t pill their cat, so prefer a topical), etc. Also, to best protect your dog and cat from problems with flea and tick medication, please read this great information from the CDC here.Īlso, note that when it comes to certain types of routes of delivery (e.g., if the product is topical versus oral versus collar), there are general pros and cons of each. To prevent any bias, these are presented alphabetically by brand name below. In today’s blog, I’ll discuss the pros and cons of using different products out there. In a future blog, I’ll discuss the pros and cons of buying from 3 different sources (and why I would personally only buy it from your veterinarian and not online). In other words, since I work at a specialty clinic, we don’t sell these products (you can buy these directly at your veterinarian, at your local pet store, or online). Posted by justinelee in Animal Safety, BlogĪs an emergency critical care specialist, I don’t “do” flea and tick medications. How to pick a flea and tick medication for your dog or cat | Dr. ![]()
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