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Amazon.com : Seresto Large Dog for Dogs Over 18 lbs. & Seresto Small Dog for Dogs Under 18 lbs Vet-Recommended Flea & Tick Treatment & Prevention Collars | 8 Months Protection Each : Pet Supplies
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Amazon.com : Seresto Large Dog Vet-Recommended Flea & Tick Treatment & Prevention Collar for Dogs Over 18 lbs. | 8 Months Protection : Pet Flea And Tick Collars : Pet Supplies
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