Mine is lint. I don't know what it is about my dark clothes. I can leave the house wearing a dark brown or black pants that are 100% lint-free, but within hours, if not minutes, I look down, and have to go hide in a bathroom stall with one of those sticky tape on a roller things. I don't know if it is air pollution, pollen, or what, but whatever it is, it seeems to always make a beeline for any dark clothing that I happen to be wearing. And if there happens to be a pet within a half-mile radius, and that pet happens to have hair, that hair will take an Express Route to my black pants. And if I pet the pet, it's good night Susie. I might as well call the pants Fur Enhanced and forget it. Is there some basic household tip knowledge that I have somehow missed out on all these years, some open secret trick that everybody else in the world knows? Or has everybody else in the world conspired to cause all lint to come take up residence on MY clothes, and leave theirs alone?