I may be the first to openly admit but I've been using resolve brand carpet cleaner for my KJ, the standard RESOLVE carped cleaner worked well enough for me when used with a big wet rag after it had been sprayed and sat soaking in resolve for 5 to 10 minutes.
Best thing you can ever do for your Auto-Mo-Beal is buy the DigitalFit Weathertech floor mats for the front and back (Husky mats are garbage and way to flimsy "Looks CHEAP"). Those salt stains will magically stop appearing after you purchase those and if they do keep showing their ugly faces you must be intentionally rubbing salt water all over your carpet. My
The below is not my photo -
They come in tan, grey and black.