Lucille Ball's actual house was used in the location shots for this episode. After Lucy and Ethel get off the bus to see "Richard Widmark's House" they are shown walking up to the house (which is located at 1000 N. Roxbury Drive, Beverly Hills, CA). The shots of Lucy going over the wall and inside the house were filmed on a sound stage at Desilu Studios.
Writers Madelyn Pugh and Bob Carroll, Jr. actually took a bus tour like the one Lucy and Ethel took, just to see what it was like. According to Madelyn, "the big event of the trip [for them] was seeing Pat O'Brien come out in his bathrobe to get the mail."
Lucy said that, many years after this episode aired, she had fans actually climb over the wall of the house belonging to her and her second husband, Gary Morton, saying that they wanted to re-create what Lucy Ricardo did at Richard Widmark's house.
When it came time for filming, Desi just couldn't properly pronounce "badger." That wasn't something scripted. Lucy teased him about the bad pronunciation by confusedly saying, "Buy-er me?!"
In this episode, we learn that the Ricardos have now been in California for a total of three months, already two months longer than originally planned.