Make Your Own Wool Dryer Balls. What wool dryer balls do: absorb moisture from the clothes in the dryer, cutting your dryer time by 25-50%! help reduce static cling, soften clothes, can lightly scent clothing naturally with essential oils (optional), save a lots of money–dryer balls can last 7+ years and remove static naturally. These dryer balls are wonderful for sensitive skin in children and adults. No chemicals, just pure wool bouncing around in your dryer saving you money.