The professional philosophy regarding chemical use is this: Use chemicals for what they were formulated for. Use carpet shampoo for carpets; glass cleaner for glass; extractor shampoo for extractors; leather cleaners for leathers, etc. As obvious as this might seem, far too many detailers use a degreaser, which is formulated to "burn" dirt off metal engine parts, as a carpet and interior cleaner. Of course it works. Joy could be used to wash your hair, but you would not, or should not, do that because of the damage to scalp and hair. A list of necessary chemicals includes: