Marketers know that fear is a powerful motivator, and these scarevertising ad campaigns drive that point home. From frightening ads that ensure you never forget to wear a condom to evil theme parks meant to scare your children into behaving well, there's plenty of fear-inducing innovation to go around.

It's amazing to see just how diverse the tactic of scarevertising can be. Check out the slideshow below to see for yourself.

Implications - But before you check out the slideshow for these 15 Scarevertising campaigns, consider the last time an ad used fear on you and you'll know how effective the method can be.