The PetArmor Flea & Tick Collar for Large Dogs is an effective way to protect your pet against fleas and ticks. The collar provides protection for 6 months when worn continuously, and it’s easy to put on and take off. It also features a waterproof formula that won’t rub off or wash away during a bath. The PetArmor Flea & Tick Collar for Large Dogs is perfect for protecting your pet at home without a visit to the vet.