Question: how long does it take to get rid of kitten fleas?
Answer: Capstar is a popular flea product that works within 6 hours to kill 90% of fleas, and it can be used on kittens as young as 4 weeks of age and older, provided the kitten weighs at least 2 pounds. While Capstar is fast-acting and effective at killing fleas, keep in mind that the effect only lasts for 24 hours.