The collar is non-toxic but it can cause upset stomach if it were to be licked or bit by your pet. If pieces of the collar were to be ingested it can cause an obstruction so it’s best to reach out to a veterinarian and Bayer’s medical emergency hotline which is 1-800-422-9874.Click to see full answer. Consequently, what if my cat licks a flea collar?For toxicity, most flea collars only cause stomach upset such as nausea, vomiting and diarrhea if ingested. If your pet has ingested part of a flea collar, it is recommended to contact a veterinarian, the emergency number on the product package or Pet Poison Helpline at 800-213-6680 for assistance.Also Know, are flea collars harmful to cats? Some contain active ingredients that can be toxic to some animals, for example, some dog flea collars can cause illness or death in cats that come into contact with the collar. A non-prescription treatment (previously only available from the vet) ‘Seresto® flea and tick control collar’ is available for cats & dogs. Also, is it bad if my cat licks flea medicine? However, dogs and cats can easily become sick if too much or the wrong flea product is applied, or the product is ingested post-application. Ingestion occurs if the dog or cat licks the treated area. The other type of flea product that can cause toxicity contains organophosphates.Can I put a flea collar on my cat after frontline? Combinations to Know: Flea Collars Some flea collars, like Preventic, are generally safe to combine individually with one of the following: Frontline Plus, Revolution, Pet Armor, Frontline Top Spot or Farnam Bio Spot, K9 Advantix II, Advantage II, Trifexis, Interceptor, Certifect, or Advantage Multi.

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