I think you’ve got all of the stains out that are gonna come out. Best option, if you want to save the carpet, is to dye it a darker color and, if you don’t like that color, then dye it back to a lighter color. I used to have Pizza restaurants, and I’ve done that several times with very good success.
Since I’m the king of cheap, I always called nearly every rug sucker, I mean-carpet cleaner/dyer in the phonebook to come out and give me an estimate. You get a lot of advice that way, too.
Good luck.
Thanks - I was thing of the darker color idea and dye. Thanks. Restaurants must be brutal. I will call for some quotes.