One of the few episodes in which Slimer traps a ghost.
The episode was recorded on May 30 and 31, 1990. Frank Welker and Dave Coulier both recorded alone on May 31, 1990.
Ray's Ghostbuster boxers makes its third appearance when Winston is tripped up by Lawrence.
Peter's "Venko the Clown" had a hair style similar to Bill Murray's clown character, Grimm, in the movie Quick Change, which had come out six months prior to this episode.
While Lothgar was trapped in this episode, his final fate is unknown. Since it isn't explained whether the trap was left behind in Toyland or if the Ghostbusters brought the trap with them upon exiting, it is unknown whether Lothgar is now permanently trapped in Toyland or if he now resides in the Containment Unit.