After hearing alot of buzz about how this sponge magically cleans your shaft better than anything out there, I went out and bought a 4-pack. I followed the directions and added water, wrung it out so that it was barely damp. The first thing I noticed when I was wiping down my shaft with it (tested it on an old shaft I don't use) is that it made my shaft EXTREMELY rough. I am guessing because this raised the grain. I have tried other cleaning methods, and basically anytime you use anything wet it will raise the grain on your shaft, but the magic eraser raised it ALOT. After about a minute of wiping the shaft I notice it was white, like it was brand new. This sponge literally got rid of every last speck of dirt on my cue, and even took care of the blue chalk ring around the ferrule. The only problem is the shaft was extremely rough, so I burnished it very thoroughly, used some fine sandpaper and sanded it slightly, then burnished it again and the cue went back to being smooth. It is absoloutely spotless, but I don't think anything that raises the grain THIS much can be good for your cue. Have any of you noticed this? Or was I not supposed to use water?