Ignore the sign and please enter. Nothing but a zombie infested area in here! A little horror is waiting to greet you. This Zombie Infested Extreme Caution Indoor & Outdoor Halloween Prop Sign is a great addition to any Halloween or horror theme décor. Morbid Enterprises is the premier supplier of Halloween animatronics, costumes, decor, masks and static props. Known for their freakishly horrific products, Morbid is sure to provide fright and fear into your Halloween.