the most common carpet cleaners i've read about on autopia (and used) are:
--Woolite (varying dilutions depending on the stain or purpose)
--Folex (got mine from Home Depot for $7)
Folex is GREAT for spot treating...Woolite seems better for general use.
There are a few very long, detailed threads regarding carpet products...I think Grouse (sorry if that's the wrong autopian) is a professional with extensive training and experience in this area...he does not agree with the Woolite option...meanwhile ScottWax loves it.
.02
