Via Wikipedia:

Davis’s first success was as Charmaine “Schultzy” Schultz in the sitcom The Bob Cummings Show on NBC, twice winning the Emmy Award for Outstanding Supporting Actress in a Comedy Series out of four nominations for this role. In the 1965-1966 television season, she appeared as Miss Wilson, a physical education teacher at a private girls’ academy in San Francisco, in John Forsythe’s NBC sitcom The John Forsythe Show. For a period in the 1960s and 1970s, Davis was known for her appearances in television commercials for the Ford Motor Company, particularly for the mid-sized Ford Fairlane models. Davis was featured in commercials for Minute Rice until the mid-1980s.
She played housekeeper Alice Nelson in The Brady Bunch television series, and various Brady Bunch sequel series and TV movies. She made a cameo appearance as a truck driver named “Schultzy”, a reference to her days on The Bob Cummings Show, in The Brady Bunch Movie in 1995.

Davis never completely retired from acting; in her later years she appeared in several disposable mop commercials featuring famous television domestics, and has appeared in a number of Brady Bunch reunion projects, most recently TV Land’s The Brady Bunch 35th Anniversary Reunion Special: Still Brady After All These Years. On April 22, 2007, The Brady Bunch was awarded the TV Land Pop Culture Award on the 5th annual TV Land Awards. Davis and other cast members accepted the award, and she received a standing ovation.

She appeared on Broadway in the musical Crazy For You.