You've likely heard of non-toxic dry cleaning for your clothes. But how about a soap-free cleaning solutions for household carpet, tile, upholstery, and air ducts that cleans without leaving fumes or a residue? The ZeroRez ZFR cleaning system forgoes traditional soap and chemical solutions for a high-alkaline patented solution that they call Empowered Water (an FDA approved sodium hydroxide based formula). We're curious, since sodium hydroxide, commonly known as lye, is a dangerous base that must be used with extreme caution. But the technology seems to be already widely used for water electrolysis in non-residential applications to disinfect, sanitize and clean surfaces and foods in a variety of fields. We can't find any local reviews, but all the national reviews seems positive, with notes about the process extracting years of soapy residue that reside inside traditionally treated carpets. We'd love to hear about any of our readers who've had experience with this service to verify or dispute the claims.