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My cat still has fleas after Frontline. Can I reapply after 2 weeks?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | 7 years and 3 months old | 4 lbs

My cat had fleas she got a reaction to treatment scabs on neck back and top of tail ( cheap rubbish ) I then used frontline but not sure if we done it right She got an antibiotic/ steroid 3 week injection but I have since bone combed her and obviously got small black hopefully dead fleas but one alive larger flea Can I use frontline again on her Used it 2 weeks ago

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on July 31st, 2019

Frontline has been around a long time now and I suspect there is some flea resistance to the product. I would recommend you use a different product like Program. Yes, you can do it now since it has been 2 weeks. ( https://www.amazon.co.uk/Program-Suspension-Small-Kittens-1-10lbs/dp/B00KF2X1BI/ref=sr_1_16?keywords=flea+cat&qid=1564665823&s=gateway&sr=8-16 ) Also, you need to be sure to treat the house or the fleas will keep causing an issue. This is the best product. ( https://www.amazon.co.uk/Virbac-Knockout-ES-Area-Treatment/dp/B00AT6FY6A/ref=sr_1_1?keywords=knockout+spray&qid=1564665743&s=gateway&sr=8-1 )

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