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Amazon.com : Seresto Large Dog Vet-Recommended Flea & Tick Treatment & Prevention Collar for Dogs Over 18 lbs. | 8 Months : Pet Flea And Tick Collars : Pet Supplies
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Amazon.com : Natural & Safe Flea and Tick Collar for Cats, 2 * 8 Months Protection, Free Comb and Tick Removal Tool, Waterproof, 13.8 inch, One Size Fits All (2-Pack) : Pet Supplies
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