This leaves a small which appears to be it recently been swept to perfection. The harshest ones are good for most stubborn stains and you don't need for you to clean the general carpet.
Mild detergent can be used in this situation. http://Color.Modesty.org/__media__/js/netsoltrademark.php?d=ttp%2F%2FUpscadvisor.Co.in%252Fgroups%252Fcarpet-cleaning-with-white-vinegar-1014483830%252F%2F