What company introduced Comet cleanser back in 1956?

Comet is a powdered cleaning product and brand of related cleansing products. The brand was introduced in 1956 by Procter & Gamble, and was sold to Prestige Brands in 2001. Comet is now sold in North America and distributed in the United States by Prestige Brands. Procter & Gamble retained the rights to market the brand in Europe, and to the professional (non-home consumer) market in the USA.

Procter & Gamble Co., also known as P&G, is an American consumer goods corporation headquartered in downtown Cincinnati, Ohio, United States of America, founded in 1837 by William Procter and James Gamble. It primarily specializes in a wide range of cleaning agents and personal care and hygienics products. Before the sale of Pringles to the Kellogg Company, its product portfolio also included foods, snacks and beverages.

In the 1960's and 1970's, Comet was known for a series of popular television ads featuring the character of "Josephine the Plumber" (portrayed by actress Jane Withers). Later, in the 1980's, she gained a niece named JoAnn or Jo, who, after helping her customers with their plumbing issues, would show them a picture of her beloved Aunt Josephine, who uttered, via voiceover, "Nothing can hold a can to Comet!".