From 1960 to 1961, she appeared in two episodes of Pete and Gladys as Gladys' cousin Violet. She also had a recurring role as "Mildred Cosgrove" on The Joey Bishop Show. In addition to her comedic roles, Landers also guest starred on several dramas and Westerns including The Gene Autry Show, Peter Gunn, The Dick Powell Show and The Eleventh Hour. In 1962, Landers made a memorable appearance in The Twilight Zone episode "A Piano in the House", playing Marge Moore, an overweight woman who is forced to reveal her inner sadness about feeling unloved and unwanted because of her girth. In 1963, she and actor Stanley Adams released the comedy record Marriage Is for Dinosaurs through Bigtop Records. The next year, she had a role in the comedy film The Disorderly Orderly. For the remainder of the decade, Landers continued with guest starring roles on The Beverly Hillbillies, My Three Sons and Hogan's Heroes. In 1967, she portrayed the role of Mrs. Blossom in Doctor Dolittle. It would be her last film role.