When I was a kid, there was a product on the market called "5-Day Deodorant Pads." A stack of cotton circles about two inches in diameter soaking in a solution were packed into a small jar. The jingle said "Use 5-Day Deodorant Pads 'cause they're five times more effective." What I always wanted to know is, was one supposed to reuse the same pad daily for five days and then return the slightly used pad to the jar with the untouched remaining pads? Or was one application supposed to be effective for 5 days? Weren't you supposed to wash your underarms? What's the deal?