I gave up on carpet....all tile in this house!
When I did have carpet, I much preferred Eco 88 over any other product. You do have to be careful with it, though, because it does sometimes lift the color from some items. I used it on my carpets and it was amazing in removing stains!!! It is also awesome in removing odors.
They have a money back guarantee.
Eco-88- pet odor and pet stain remover. Guaranteed!