An iconic detergent—and a technology that would eventually change how American households cared for their clothing—made its first appearance 81 years ago today. On October 10, 1933, Dreft, the first household detergent, went on sale.   Dreft is still manufactured today, and P&G has expanded this brand to emcompass more than powder and liquids. This brand—which has been positioned for years as a “best-for-baby” option—now includes stain pretreatments, fabric refresher and wipes....