All of the above! I don't think I have a problem with threads stuck in the rollers on mine but I have a waste basket next to my machine so waste goes into that. Of course, some misses and is on the floor but anyhow..... I would suggest trying chairs and be sure that, when you lean over to pick up something off the floor, the rollers don't work too well and pitch you down there with what you intended to pick up. Might be picking self up, too!!