I have had much better luck using a cup to trap them. Seems to me that they aren’t as likely to fly away when I approach slowly with a cup to trap them inside the cup, then slide a piece of paper or cardboard across the opening and release them outside. Of course only works when they land on a flat surface like a window.
Doesn’t answer your question directly but those short lint fibers can be pushed into a toilet paper roll and made into firestarters that work at the campsite