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CrossBlock II Flea Preventative for Cats Over 9Lb. (3-Pack)CrossBlock II is a topical flea treatment for cats that kills adult fleas as well as their eggs and larvae. It contains imidacloprid and pyriproxyfen, and starts killing fleas within 2 hours, providing a full month of protection. CrossBlock also prevents re-infestation of fleas by stopping fleas fro...$13.45$14.67 -
VetOne: CrossBlock II Kills & Prevents Fleas on Cats & Kittens - Pack of 3 Ensures 3 Months of ProtectionCrossBlock II is a topical flea treatment for cats that kills adult fleas as well as their eggs and larvae. It contains imidacloprid and pyriproxyfen, and starts killing fleas within 2 hours, providing a full month of protection. CrossBlock also prevents re-infestation of fleas by stopping fleas fro...$13.00$13.00
