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Is it safe to use Bio Spot flea collar and Advantage II on cats?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 12 years and 6 months old | 9 lbs

Can I use bio spot flea collar and Advantage 2 flea meds on my cats at the same time?

1 Answer

Most Helpful Answer

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Answered By Lauren M. Jones, VMD

Veterinarian

Published on July 31st, 2017

Yes, you can use both of these flea preventatives simultaneously. However, flea collars are notoriously ineffective, so I never recommend them under any circumstance. If Cali is currently having an issue with fleas, you can instead give her an oral Capstar ( http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=10902 ) to kill adult fleas within 30 minutes, and use the Advantage to prevent fleas for a full month. If Cali is not currently experiencing a flea infestation, Advantage alone should be sufficient. Good luck! :-)

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