Ghost Traps were devices used by the Ghostbusters to trap ghosts.

When a ghost is caught by a Proton Stream, the Trap is set near it and activated by the foot pedal. Once active, the lid opens, causing a vortex to emerge and latch on to the Ghost, who is then draged inside the trap. Once the pedal is released, the lid closes, trapping the Ghost inside a sealed container. The Ghost is then safely transported to the Containment Unit, where it is released into the grid and stored indefinitely.

Traps cannot be re-opened without releasing the ghost contained within.