Carpet edge has black line stains. We just purchased the home.
Answer: The black line stains on the edge of your carpet is likely candle soot and will be difficult to clean. I would recommend using the upholstery attachment on your carpet cleaner get right up to the edge for the best chance of success. Try carpet cleaning with the Lift-Off® Deep Cleaning System, and 2X Professional Deep Cleaning Formula with your carpet cleaner. 2X Professional Deep Cleaning Formula will protect your carpet against future stains with Scotchgard™.