Hartz® Ultra Guard Plus® Flea & Tick Collar for Cats and Kittens with Reflect-X Shield®. Water resistant. Water resistant. Kills fleas. Kills ticks. Kills flea eggs. Kills flea larvae. Kills & repels. Fleas. Ticks. Flea eggs. Flea larvae. Prevents. Flea eggs from hatching. Full body protection. 7 Month protection. Reflects direct light up to 450 feet. Net contents: 1 collar. To activate collar, hold at each end... stretch... and it's ready for your cat to wear. For more information, call our experts at 1-800-275-1414 Hartz® and other trademarks are trademarks of The Hartz Mountain Corporation.