I'd like to hear some different opinions on this subject. I have Simonis 860HR in green and use the blue chalk. I purchased the Simonis X thing that was supposed to pick up the chalk but found it to be pretty much worthless. I have been using a high quality microfiber towel just a little damp and going over the cloth but I worry about water and wool. I don't brush anymore but do vacuum often. Still after an hour of play, my bridge hand is dirty with chalk just like the pool hall.