I was threatened with bodily harm if the chaps went anywhere near the washer, so that wasn't an option for me. I was a bit confused, though, as I was under the impression that chaps were supposed to prevent injury, not cause it.The chain took a pretty wide chunk out, so even butterfly clips weren't much use.
For the chaps, still say to wash them before use as they work better then. I did mine on gentle warm wash in the front loader washing machine then drip dried them. Worked a treat.