Chances are you'll need a combination of hot water, a cleaner or carpet shampoo, a firm bristle brush, a wet vac, and some elbow grease. This is the closest thing to simulating an expensive carpet extractor that professionals will use. (If you're interested in one ours is for sale for $999 we paid over $1700 for it new, heh
)
Let us know how you make out with everything.
George