Capstar for Dogs and Cats Review
Bottom Line

Capstar for Dogs and Cats is an over-the-counter tablet that's very safe for both dogs and cats as young as four weeks and that weigh between 2 and 25 pounds. A version for dogs over 25 pounds is also available. Capstar kills fleas quickly and without the mess of topical treatments, but it works only on adult fleas.

Pros
  • Kills adult fleas quickly
  • Side effects are rare
  • No mess
  • No prescription required
Cons
  • Doesn't kill flea eggs or larvae
  • Pets may not take pill willingly
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