I cleaned a 12 yr. old Kazakhstan rug the other day and the woman complained the next day that it looked blotchy.  She's a regular and I've cleaned that same rug 4 or 5 times with no problems.  I thought maybe it had a brownout problem but when I went back that wasn't it.  It was the grain of the rug.  It needed brushed down the right way and in some spots it therefore looked blotchy.  But here's the wierd thing: I had brushed it all one way and when I tried to do so again, it only got rid of the blotches on one side.  They then appeared if you looked at the same spot from the opposite side of the carpet. 

 

So we could get it looking really good if you stood on one side of the room but it looked terrible if you stood on the other side of it.  Fix a blotch to go away and then it appeared from the opposite direction.  Wierder still, stand in front, rather to either side, and some of the blotches appeared as way too bright spots instead!

 

There seemed to be no way to groom the carpet to make it look normal again from any angle.  But as I said, I'd cleaned this carpet before and nothing like this ever happened.  I also cleaned 6 other Orientals in their house that day and all of them were just fine.

 

Anyone else ever have this happen to an Oriental rug?

 

I had a simular problem with a Turkish rug 2 years ago.............it just went away after vacuumming 20 times, I did clean it again with a neutral cleaner

 

                                                     Nightrider