They absorb water and their movement in the machine helps separate the clothes in the load so they can dry more evenly. Each ball can be reused for 1,000+ loads!!!
Promising review: "I love that buying these hand-made organic wool balls has helped provide fair-trade income for women in Nepal. I wear black pants and the balls have not left lint on my clothes at all. My clothes — even in a big load — dry more evenly, without the damp spots that make you run the dryer again. Plus, when you open the dryer, you see these cute penguin faces in your dryer among your clothes and it makes you smile. It makes you feel good knowing you have helped other women and their families by buying them as well, and you feel good knowing only organic wool was used, no chemicals. It's winter, and I have noticed static electricity now if I don't add my dryer sheets. But overall, I love these little guys and they make doing laundry more fun." —CMD
Get a pack of six from Amazon for $23.95.