(Package Set) Flea and Tick Collar. Ultrasonic flea and tick control collar for dogs and cats. Flea Free collar. New technology Ultrasonic wave controls fleas and ticks. No chemical, No odor, No fuss, No mess. Small, fitted, 100% fit dogs and cats with the neck size up to 30 inches. Waterproof with comfortable rubber cover. English / Spanish manuals. One year warranty from Manufacture DTMcare.