It was a massive commercial success, earning nearly $26 million ($182 Million adjusted for inflation) at the box office (on a tight budget of $2.5 million) and earning over $11 million in rentals. Thus, it was the top-grossing film released by United Artists in 1968. This came about probably on the strength of Lucille Ball's name and performance (which many of her fans regard as a classic). Some critics felt that Ball, then in her late 50s, was perhaps 15 years too old for the part of a middle-aged (presumably 40-ish) mother.