Click to enlargeCrossBlock II


Active Ingredient imidacloprid | pyriproxyfen

Description CrossBlock II for Dogs and Puppies treats and prevents flea infestation on dogs and puppies 7 weeks of age and older. Active ingredients include: Imidacloprid 9.10% and Pyriproxyfen 0.46%. Kills adult fleas and prevents further re-infestation on dogs 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 See package insert for complete product details.


Click to enlarge3-10 lbs, Purple Label (3 dose x 12)
Click to enlarge11-20 lbs, Green Label (3 dose x 12)
Click to enlarge21-55 lbs, Red Label (3 doses x 12)
Click to enlargeOver 55 lbs, Blue Label (3 dose x 12)

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