Billy Mays, pitchman for OxiClean and OrangeGlo household cleaners, has died at the age 50. The exact cause is being determined by an autopsy, according to published reports. Mr. Mays, who became a highly recognized figure for his OxiClean, OrangeGlo and Kaboom! sales pitches, was co-host of a new reality show called “Pitchmen,” in which he searched the world for inventions. A statement from Discovery Channel’s “Pitchmen” website read: “It is with incredible sadness that we have to report...