Suppose a housewife one day accidentally discovers that a gallon of tap water combined with a dash of salt, a pinch of flour, a drop of ammonia, a splash of cooking oil, and tiny bits of several other ordinary kitchen ingredients will produce a concoction that cleans and sanitizes dishes, clothing, countertops, sinks, windows, automobile exteriors and interiors, household pets, and infant children. It also is astonishingly effective at fighting cavities, whitening teeth, and keeping gums healthy – and it keeps breath fresh for 24 hours. This remarkable all-purpose cleaner is 100% safe and totally effective. The cost of producing...