About This The PetArmor Extend Collar for Cats delivers up to eight months of continuous protection from fleas and ticks, without a prescription. This collar starts working 24 hours after the initial application, and is formulated for cats and kittens ten weeks or older 8 Months of Continuous Protection: The PetArmor Extend Collar for Cats kills and repels fleas and ticks for up to eight months; Starts working 24 hours after the initial application Vet-Recommended Ingredients: This collar is made with the sam active ingredients as Seresto, but without the high price tag; It’s formulated for dogs and puppies seven weeks or older and requires no vet visit or prescription Odorless, Non-Greasy & Water-Resistant: Unlike other flea and tick collars, the Extend Collar won’t leave a chemical smell or greasy residue on your cat’s coat; The long-lasting, water-resistant formula keeps protecting against fleas and ticks, even if your cat gets wet Easy-to-Wear: Designed to be worn underneath their regular collar for discreet protection that works day and night Overview Brand : PetArmor Item Form : Collar Scent : No Scent Item Weight : 0.2 Pounds Active Ingredients : Flumethrin, Imidacloprid Age Range (Description) : All Life Stages UPC : 073091052203