Along with your local rug cleaners to see which methods they offer and when are appropriate for your green area rug.
Ideally you would go in the areas 2-3 times ideal results. Is actually where they apply some kind of chemical detergent solution and then "scrubbed in" with a carpet-cleaning machine. http://Wagyu-America.net/__media__/js/netsoltrademark.php?d=R09.kr%2Fbbs%2Fboard.php%3Fbo_table%3Dfree%26wr_id%3D632035