Dog: EFFECTIVE FLEA & TICK TREATMENT: Kills and repels fleas and ticks (including deer ticks) while preventing new flea infestations; starts working through contact EASY-TO-USE & VERSATILE: Water-resistant formula stays effective through swimming and rain; plus, this dog collar can also be worn with a regular collar CONTINUOUS PROTECTION: Each dog collar features an extended-release technology, which transfers the active ingredients to your dog's coat and skin for up to 7 months of protection GREAT VALUE: Offers up to 7 months of continuous, long-lasting flea and tick prevention and protection COVERAGE FOR EVERY PUP: Adjustable and comfortable collar for small dogs fits all breeds that are 12 weeks and older. Simply place collar around dog's neck and adjust collar to fit and trim Size: For Small Dogs 5 - 14lbs Ingredients: Tetrachlorvinphos: 14.55%, (S)-Methoprene: 1.02%, OTHER INGREDIENTS: 84.43% Cat: EFFECTIVE FLEA & TICK TREATMENT: Kills fleas, flea eggs, flea larvae and ticks including deer ticks and prevents new flea infestations for up to 7 months EASY-TO-USE & VERSATILE: Water-resistant formula stays effective through rain; plus, this cat collar can also be worn with a regular collar CONTINUOUS PROTECTION: Each cat collar features an extended-release technology, which transfers the active ingredients to your cat's coat and skin for up to 7 months of protection COVERAGE FOR EVERY CAT: Adjustable and comfortable Breakaway collar features easy release snap; for cats 12 weeks and older GREAT VALUE: Offers up to 7 months of continuous, long-lasting flea and tick prevention and protection Size: 1 pack Ingredients: Tetrachlorvinphos: 14.55%, (S)-Methoprene: 1.02%, OTHER INGREDIENTS: 84.43%