"Jan call Eve" was written on the kitchen blackboard in the background during the opening scene. The actress who plays Jan is named Eve Plumb.
Robert Reed was written out of this episode. He felt that the plot involving hair tonic was implausible. When he began arguing with the producers over the script, studio security wanted to remove him from the set. However, Sherwood Schwartz would not allow it because he felt that it would be too distressing for the kids. Reed remained on the set to watch the filming of the episode, which would ultimately become the final episode of the series. Carol refers to Mike's absence in passing in the closing segment, in which the family returns home from Greg's graduation ceremony. She says to Greg, "We're so proud that you graduated with honors, Greg. Too bad your father was out of town and had to miss it."
When Bobby can't sell any of his hair tonic he says he's going to give up. Carol tells him winners never quit. She mentions a man by the name of Carl Mahakian, saying no one had ever heard of him because he quit. In reality,
Carl Mahakian was the series' post-production coordinator.
This episode features the fourth appearance of Sherwood Schwartz's daughter, Hope Sherwood, and the second appearance of Florence Henderson's daughter, Barbara Bernstein.
The final line of dialogue (in this, the final episode of the series) is delivered not by any series regular, but by Cousin Oliver.