If you don't know about dryer balls, here's the scoop. You use them in replacement of fabric softener sheets. They help to cut your drying time because wool absorbs moisture. They also collect little bits of thread and lint. Just pick it off. You can add a dab of essential oils for scent, if you like.
I use 3 in my dryer at all times.
These are made from mill scrap so that nothing goes to waste here. We are a zero-waste mill. All of the dirty stuff gets composted.