Just take a kitchen roll towel and wet it slightly with plain water. Now dip it briefly into the fresh ashes in your fireplace, so that something gets stuck on the paper. This ash cloth Now wipe the disc. I could only themselves do not believe, but it works perfectly. The discs are as clean as with any other cleaning agent, and I have to do this, some already tried before I even got this tip.
Ultimately, it will save you money, it is clean and the environment you have done a little favor. Try it a try! ;-)
** If you were an aid in product selection my review, so please give me just a "yes". For questions, suggestions and discussions, I am in the comments you may have. **