I never put dirty items in my dryer. I have put things in it to get warm, but they were clean - - - or clean enough. Sometimes I put my pajamas in the dryer to warm up when I'm not feeling well and need the warmth.
I take dirty items outside and shake, shake, shake. Then just wash them. The washer seems to take everything off. Sometimes a pillow will loose feathers or a rug will loose pile in the washer and I have to wipe it out with a damp rag. But the dryer lint catcher does a good job.