Fill the muslin bags with your chosen dried herbs. Pick your favorite! Don’t pack them too tightly, though. Leave a small gap free at the top of the bag so it ties nicely together. 

Place the muslin bag tied up in a basket with the dryer balls.

Keep the basket loosely covered with a towel while not in use to trap the fragrance. 

Be patient! You’re infusing the dryer balls naturally with the scent of herbs, which may take a few days to happen.