Armed with this knowledge you’ll be able to make a much more informed decision on which flea collar to use and how to get the most out of it. The Seresto collar is largely only effective against adult fleas. Flea larvae are minimally affected and flea eggs are not. The collar can kill adult fleas before they are able to lay eggs, but if there was a pause or lapse in use of a collar, allowing any eggs or larvae to be introduced by adults before they were killed, the collar will not be able to eliminate those younger stages of the infestation. Now, it’s true that eventually any eggs and/or larvae on a cat and in the environment will develop into adults and the collar will kill them, but this may take some time depending on how many eggs or larvae we’re talking about. An adult flea can lay 50 eggs a day. Fake/counterfeit Seresto collars have also been documented. Hopefully this wouldn’t be an issue at Tractor Supply, but is worth mentioning. These troubling symptoms appeared shortly after use of the Seresto collar began, mostly within the first month," according to the report. "Many pet owners reacted by removing their pets' collars early," it said. Flumethrin is a pyrethroid insecticide that conveys its action through voltage gated sodium channels in nerve tissue. Its action leads to repeated nerve impulses that lead to death of the insect. It also has a very high affinity for invertebrate (insect) nerve tissue, lending to its safety for use in dogs and cats.

The PMRA's analysis of symptoms experienced by hundreds of pets included skin lesions and irritated skin, which sometimes covered large areas of a pet's body and didn't resolve after the collar was removed, the report said. Other symptoms include lethargy, abnormal behavior, excessive grooming and vocalization, vomiting, diarrhea and anorexia, according to the panel. We like that it’s small and thin, meaning you can fit it under your cat’s existing collar and they’ll barely notice it. What do Seresto Cat Collars contain that makes them so effective? They contain two active ingredients, imidacloprid and flumethrin. The ingredients list also mentions “other ingredients,” which is basically the polymer matrix that makes up the collar and holds the active ingredients within its surface. It’s hard to find good resources online surrounding this collar, but the information we could find explains that it works through a formula of natural oils. Citronella being the primary repelling agent. Most spot-on treatments last for up to 30 days, but the Seresto collar lasts for a massive 8 months, so if you’re looking for the longest-lasting flea treatment, this is it!A special kind of medication is used in some collars. The medication seeps into the cats fat layer and is effectively spread around the cats body by its natural skin oils. This doesn’t pose a threat to your cat’s health providing they do not react negatively to the compounds used. The Seresto collar is applied for use every eight months and can be used on cats and kittens 10 weeks of age and older. The active ingredient lasts roughly 6 months and there’s a faint smell to it, but nothing overpowering and definitely not unpleasant. This gives you the least risk of seeing side effects and putting your cat’s health in jeopardy. Respected brands will always have tested for effectiveness and side effects before marketing their product.

Suitable for cats over 10 weeks in age, this product remains the undisputed champion of the industry.If you combine the use of a flea collar for cats with regular brushing and combing using a suitable cat flea comb, you can really lower the chances that fleas get a foothold in your cats fur. Combing should be done once a week at least to ensure you catch and remove adult fleas before they get a chance to lay eggs. Collars are usually the best option for cats that are not already suffering from severe flea infestation.