This is a three dose package of CrossBlock II for Dogs and Puppies. CrossBlock 2 treats and prevents flea infestation on dogs and puppies 7 weeks of age and older. It’s fully guaranteed and is a generic form of Advantage II. It’s an awesome flea preventative with trusted and well established ingredients.
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