This carpet was a cheap price and now I know why.  The carpet has a series of waves in it from one end to the other.  I have laid it out front-side down and placed weighted objects on it to help flatten the rug.  That was two weeks ago.  I still see no improvement in the rug.  It still has the same waves in it.  I doubt that the waves will ever come out.  I am going to try and use a light steam on the back side of the carpet, but I doubt that will work either. It will probably shrink the backing.   I'm disappointed in this product.  It isn't even worth the $30 I paid for it.