Amen to that!
My beloved husband once had a neon green shag rug as a hippie teenager and he loved wall to wall carpeting.
The stuff is going as soon as I figure out what to do.
Well, try the steam cleaner from the supermarket. It's a little work, but you'll pull out tons of mud and it may just restore your rug.
You can clean your runners and throw-rugs with it too.