Health & WellbeingI have a 15 year old scottish fold who was given hartz fLea drops a week ago by her previous owner, and she's still covered in fleas. I have advantage II for my British shorthair. Can I use the advantage on my new cat or will that overmedicate her? I
Congratulations on adopting Butterscotch! She's adorable! Good for you for having Advantage II on hand - this is a much more effective and safe medication than Hartz flea treatments. However, I generally advise waiting at least 2 weeks between applications of topical flea medications. Fortunately, there are a few other options for treatment at this point. The ideal option would be giving Butterscotch prescription-based Comfortis, which is an oral flea medication that works quickly and effectively, and can be given at the same time as topical medications due to different mechanisms of action. However, this may require a trip to the vet since Comfortis is prescription based. The other option would be to give Butterscotch a dose of oral Capstar (available through most pet stores) which will quickly kill adult fleas, but will not provide lasting prevention. After a dose of Capstar, you can also give her a bath in original Dawn dish soap to kill any lingering adult fleas and remove any flea
Updated on August 12th, 2025
Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
Become a credit card member today!
