A March 2021 investigation by USA Today reported 1,700 animal deaths and other adverse reactions linked to Seresto flea collars. It's unknown if the EPA-approved pesticides used in the collar caused these incidents. You can read more about the safety of Seresto collars in our FAQs.

Although topical flea control products are typically easier to use (no need to convince your cat to swallow a pill), there are some cases when an oral preventive is an ideal choice among the best flea treatments for cats. For instance, some cats with sensitive skin can't tolerate a spot-on treatment. "Comfortis is one of the ones I like," Harper says. "It's harder to get the cat to take an oral product, but if you can manage it, it's a pretty effective oral flea medication. It's strictly and solely for fleas." A Frontline overdose in cats is extremely rare, but applying or ingesting too much product will likely produce many of the side effects listed above. Still, if you know that your cat has been exposed to more than the prescribed dose of fipronil and is experiencing side effects, you should take them to a veterinarian as soon as possible for evaluation. The collar is nongreasy, odor-free, lightweight, and adjustable for cats of all sizes. Your cat can wear it alongside their existing collar. If the flea collar catches on something, your cat can free itself thanks to a two-step safety system.Available without a prescription, Capstar is the only flea control product safe for kittens as young as 4 weeks and weighing at least 2 pounds. Kittens must be at least 8 weeks old and sometimes older to be treated with other topical or oral flea control products. IF SWALLOWED: Call a poison control center or doctor immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by a poison control center or doctor. Do not give anything by mouth to an unconscious person. Water exposure, bathing or shampooing does not affect the efficacy of the product as long as it doesn’t occur more than once a week or within 2 days of application of the product. If you have any questions about application or safety for Frontline products or any topical product, make sure to get in touch with your veterinarian. Conclusion

In March 2021, USA Today and the Midwest Center for Investigative Reporting published a report alleging that the Seresto flea collar is linked to thousands of adverse incidents in pets and humans. To date, 2,500 pet deaths have been allegedly linked to the collar. Thanks for your question. Before assuming the product doesn’t work, there are some things to consider. When there’s an active flea infestation and Frontline is applied to stop it, it can take 24 hours initially for the product to disseminate through the skin. Minimum age and weight: Cats must be above a minimum age and weight to use flea medications. For this reason, there are fewer options for young kittens. Both ingredients found in Frontline Plus (fipronil, (S)-methoprene) generally appear to have a low potential for toxicity both topically and even if accidentally ingested. The other downside to the spray vs. the spot-on is that the spot-ons have a measured dose based on weight, which is better for safety and knowing how much of the product the cat has received. With sprays, there are general guidelines of how much to apply (1-2 pumps per pound of body weight), but many folks, in seeing lots of fleas, are more likely to be very overzealous in their application of such a product. If there is some kind of health concern following application, it would be hard to quantify exactly how much the cat received.con icon Two crossed lines that form an 'X'. Not recommended for kittens younger than 10 weeks of age If for some reason you are unsure if the product was administered correctly or whether all of it was applied, it is usually safest to not apply an additional dose.

Flea sprays are applied to the skin and coat; we do not recommend them because topical and oral products are more effective.While Frontline products are considered to be waterproof, make sure not to bathe your kitty for 24-48 hours after an application. Bathing shortly before application may also reduce its effectiveness. con icon Two crossed lines that form an 'X'. Not labeled for use in breeding, pregnant, or nursing cats