Well, to be honest Bella, I'm not completely sure if any of them actually fell off on their own. I know my kitties have pulled some off and it's possible they pulled all of the ones I found on the floor off. :D I do know that for me they are more trouble than they're worth. I really wanted to like them, but I found them to be no easier than my safety pins. And since my kitties leave those alone, I'll stick with them. I still found the Pinmoors to be too bulky on my large quilt though. Since I quilt as well as piece on my regular machine, it was all just too much trying to maneuver it through the machine. And several did come off when I was pushing it around during the quilting so process. I know other quilters love them, I'm just glad we have choices that we can each find what works for us and be happy with. :D