Updated On September 23rd, 2025
If I give my cat capstar how soon is it safe to start a longer-lasting topical flea treatment? Which topicals are safe to use - any, or just select brands?
1 Answer
Published on January 13th, 2020
You can use Capstar concurrently or start a topical the next day. Capstar starts to work to kill adult fleas on your cat within 30 minutes. Within 6 hours all adult fleas on your cat should be dead or dying. It can be given daily if necessary.
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