07-21-2014, 07:59 AM
CTI has a product called Dinge Away. I've heard good things about it. And as a CTI distributor we can get it for you. It is intended for exactly what you're describing. It alters the appearance of the worn surface of the carpet. Here's a link...
http://www.proschoice.com/html/dinge_away.html
http://www.proschoice.com/html/dinge_away.html