I sprayed the curtain, and went ahead and did the floor as well...Let it dry and was impressed with how well the residual odor that was left by our other cleaning agent was removed. The area was fresh and clean smelling. The little bit of stain on the curtain was removed too. We were happy to not have to take down the curtains to wash them!!
If you haven't tried these products, I recommend them. You can visit their website here, and see how the products work, and the many varieties that are available.