The unique design of the Dryerballs lift and separate fabrics while relaxing fibers. The result is less lint and wrinkles, softer clothes, more absorbent towels and a reduced drying time of up to 25% - saving you moolah! Best of all, it's toxic-free, environmentally friendly, and guaranteed to last up to 2 years. That's equivalent to a whole lotta dryer sheets. *Cannot be used with scent sticks, only the Pink PVC Free Dryerballs work with the scent sticks.