What do dryer balls do? They’re an energy-saving alternative to dryer sheets. They naturally soften clothes without the use of unwanted harmful chemicals contained in dryer sheet. Wool Dryer Balls can also reduce your dry time by 10-25%, saving you time and money and we have tests to prove it! And another added bonus, they reduce static and wrinkles! Within a few short months your Stoney Mountain Farm wool Dryer Balls will pay for themselves.