Introducing the newest and fastest FRONTLINE product - FRONTLINE Shield. No matter your plans, FRONTLINE Shield is here to protect your dog-inside your house, outside on a hike, and everywhere in-between. One topical application starts killing fleas in just five minutes*, and starts killing ticks in one hour*. FRONTLINE Shield provides extra-strength, waterproof protection for dogs with a new 3-in-1 formula that lasts a full 30 days and prevents all flea stages from developing to help prevent re-infestations. It also kills chewing lice and repels mosquitoes, ticks, and stable flies. Your dog is your #1 adventure buddy-take him everywhere with FRONTLINE Shield, from the #1 name in flea and tick protection1, FRONTLINE. *Starting two days after application 1. Data on File at Boehringer Ingelheim.