I've been doing my own testing on it.
The Sorona Polymer is corn based... The FTC gave it its own fiber designation. From now on you'll have Nylon, Olefin(polypropolene), Polyester, and Triexata(Dupont Sorona).
Anyways I took a 27 by 48" Smartstran Sample that is part of the Karastand line and dumped Catchup, Furniture Stain, Permanent Marker, Chocolate and then loaded up some of the dry soil from a recently badgered rug and mixed it with some differente household oils. Through it all on the carpet sample and then dragged it around the mud and dirt on the shop parking lot. I extracted one foot with just water.. ( 190 F 600 psi greenhorn 10 flow. Three heavy wet strokes each).
I then waited two weeks before I extracted the rest. I'll get to attempting the spots (furniture stain and Permanent Marker) at some point. But again the extraction was no vacuuming.. just several hot water only passes with the wand. I plan on doing a vacuum and badger test as well when i get the chance.
Picture 1: Just the spots and stains
Picture 2: Well soiled
Picture 3 and 4: One foot extracted after 1 day
Picture 5: Entire Thing extracted:
Picture 6: One more picture:
I'm impressed with the water only part, once I've tried the spots, I'll try a prespray and see if the darker oiler areas can be revived.
Also we have been walking on this at the entrance to our offices for the last year and a half and have had no real crush issues.