Fleas and ticks are the worst enemies of dog. To protect your dog from the harmful effects of flea and tick infestation, Frontline Plus for dogs is the ultimate prevention treatment. This fast-acting topical treatment kills adult fleas within 12 hours of application and ticks within 48 hours of application. The long-lasting effect makes it work for the whole month against flea and brown dog tick attack, and for up to two weeks against paralysis ticks. Being waterproof, Frontline Plus is effective even if dogs have a bath or go for a swim.