fantasic oxy-clean
Awhile ago I went to pick up my venti sugarbomb gutblaster chocolate coffee thing from my cupholder. The bubble on top wasn't on right, and the whole drink went sloshing to the floor. I had about half an inch of chococoffee slush down there, on both sides. I don't think I've ever been more pissed in my life.
After soaking it all up I found that fantasic oxy-clean spray really did the trick getting it out of there. I had to use a huge amount blotting the stains out, and it took forever, but it did the trick where other products, some even more specific to cleaning auto carpet, didn't do a thing.
the moral: beware the starbucks drive-thru across from the mall in lakewood, ca. and pick cups up from the middle.