What's the best method and product to clean Micro-Fiber Tan sofas?

Posted under sofas

I have a 3 seater couch and a Loveseat. They're both medium dark tan. I did not spill anything on it to stain it. Like the edges of the sofa cusions and arm rests are too dark and smooth other then being soft. The sofas are also darker then how they use to look. I vaccuum them once a month and whipe out whatever might of spilled on it. I don't know how to explain it. Is it wera and tear? I know I can clean them to being back to soft and one solid nice tan color. I rather do it then haveing to pay someone else to do it. PLEASE HELP ANY WAY YOU CAN. THANK YOU…

Resolve works great and woolite for sofas is another good one