A duster should be cleaned when it no longer is picking up dust. If you notice that dust is being left behind, it's time to clean the duster. One that is used frequently, and looking dingy or dirty, should be cleaned to prevent spreading around dust and dirt.

Synthetic dusters should be washed gently in warm water with a few drops of dish soap. Rinse them until water runs clear and let them air dry. Don't put synthetic dusters in the washing machines because it could damage them.

For best results, wash microfiber dusters separately as they easily pick up lint from other materials, especially cotton terry cloth. Microfiber can go straight into the washing machine with warm or hot water (a temperature of around 130 degrees F opens up the fibers to release dirt) and a mild detergent.

The long-lasting fibers are easy to wash, too! Bring the magnetic duster outside and give it a good shake to remove the bigger dust particles. Then, wash the duster using mild dish soap. Rinse under running water.