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  5. VetOne CrossBlock II for Dogs & Cats

VetOne CrossBlock II for Dogs & Cats

CrossBlock II is a topical flea treatment for dogs that kills adult fleas as well as their eggs and larvae. It contains imidacloprid and pyriproxyfen, and start killing fleas within 2 hours and continues to work for 1 full month of protection. CrossBlock also prevents re-infestation of fleas by breaking the life cycle and preventing fleas from reproducing. Waterproof formula with easy open, individual dose applicators. For dogs and puppies 7 weeks of age or older weighing at least 3 lbs.

  • Kills adult fleas and prevents further re-infestation on cats
  • Kills re-infestation fleas within 2 hours
  • Breaks the flea life cycle and prevents flea eggs and larvae from developing into adult fleas
  • Waterproof after application
  • Effective for one month
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