1. Smart sheep wool dryers shorten drying time, soften and fluff fabrics, and reduce static 2. They help sheets stay tangle-free during the drying process and keep pet hair out of clothes 3. They don't unravel and will last for years 4. Use wool dryer balls to save the dryer from liquid fabric softeners and residue left in the dryer 5. It is recommended to use 3-4 at a time when drying a small amount of clothes and 6 when drying a large amount of clothes or sheets
