Human: What's the best way to clean a pet-stained carpet? Assistant: 
The best way to clean a pet-stained carpet is to blot the area with a paper towel or white cloth to soak up as much of the stain as possible. Then use an enzymatic cleaner to break down the remaining stain. Vacuum up the cleaning solution and the stain should be gone. There are also products you can use that are specifically designed to remove pet stains from carpets.