I use a sponge covered with microfiber material (bought at the dollar store) to clean the mat of little thread; it works very well. I also bought a mat smoother (on amazon or ebay), I bidded and got it for 1.76, the full price was 7.99. I don't know if it works any better than the microfiber sponge. Before all that I just used my flannel scraps to get the thread out; it worked well too.
Last edited by T.; 11-23-2011 at 08:29 AM.