Definitely do not recommend if you have colored carpet
** BEWARE of use on medium to dark colored carpet!!  I was Wowed by this product when I first started using it.  It really got pet urine out of the carpet.  I followed the directions and color tested an area of carpet in my closet to check for colorfastness as I have mocha colored carpet.  There didn't seem to be an issue so I cleaned up a few spots in the living room.  Again there didn't seem to be an issue with color.  However, I just finished cleaning my carpets and there is noticeable discoloration while the carpet is still damp.  I hope that once the carpets are dry it won't be as noticeable.  Definitely do not recommend if you have colored carpet.
Rating: 3 stars