You can also confirm if your rug requires a deep clean by lifting a corner of the rug and slapping it with a back corner of your hands.
It doesn't take long for floors to get nasty. http://1031emigrantexchange.com/__media__/js/netsoltrademark.php?d=Phillips459.Lemontreebookkeeping.com%2F__media__%2Fjs%2Fnetsoltrademark.php%3Fd%3DForums.it-alfa.com%252Fprofile%252Fleticiaprince7%252F