Cost: $6,000- Vents on the side of this box expel strong scents that can be used to lure in feeding dinosaurs. In Primal Prey, the Dinosaur Bait is a small box sitting atop a stake. The stake is pegged into the ground, where small, red vents on the side of the box expel scents to attract dinosaurs. It is unknown for sure what kind of scents are released from the box, but it is assumed they are of dead animals to attract carnivores.