<human>:  How do I clean a carpet stain?
<bot>: The best way to clean a carpet stain is to first blot the area using a clean, absorbent cloth. Then mix a solution of 1/4 teaspoon mild detergent, like dish soap, and one cup of warm water. Dip a second cloth into the solution and blot the stain, then blot again with a dry cloth to absorb the liquid. Repeat until the stain is gone. If the stain is persistent, you may need to apply a commercial carpet cleaner to the area.