Corduroy is a pile fabric -- usually cotton -- with vertical ribs, or "cords." It is very durable and ideal for long-term wear. The fabric does require routine cleaning, however. If it's left soiled for extended periods of time, the channels between the "cords" in the fabric can accumulate dirt and grime. The material's distinctive texture of ribs and channels is more likely than other fabrics to collect and show dust, hair and other particles, prompting the need for frequent cleaning.
Check the garment for stains that need to be spot treated. Dilute powdered detergent with cold water at a 2-to-2 ratio to create a paste, which you can apply directly to any stains. If you're using liquid detergent, dab it on stains with a rag or cotton swab. Gently massage the detergent into the stained area and then rinse with cold water.
Fill a sink or basin with enough water to fully submerge the corduroy garment you want to wash. If the item of clothing being washed is dark, use cold water. Light colors require warm water. Add 1/5 cup of detergent.
Turn the garment inside out to prevent the "cord" pattern from fading. Soak the article of clothing in the water.
Thoroughly massage the garment, using your fingertips, to loosen dirt and other particles. Cover the full length of the item.
Rinse the detergent out of the clothing using lukewarm water and allow the garment to air-dry on a hanger or on a clothesline.