We had an emergency spill that was needing to be cleaned. That wasn't able to be removed completely. But it did look better. It all looked great while it was fresh. But as soon as it dried, you could see some of the small dark spots again. They were small spots where people dropped chips, etc. So it started as a small grease spot and then just got darker. I'm seeing those spots pop back up again already and it 's been less than a week. '

Overall knowing the carpet is somewhat cleaner is nice, but would like to see the spots gone too. I was happy about the drying time.