I have seen a lot of people posting very bad ideas on how to clean CDs and DVDs. Using toothpaste will ruin your CDs. Toothpaste is a mild abrasive, even if it looks like your CDs are cleaner, you have just permanently scratched the surface. Other homemade cleaning solutions that I have read about used dish soap and alcohol. Alcohol will ruin your CDs and dish soap will leave a residue that will damage your player. Both bad ideas. The best cleaner is the commercially available CD cleaner. It is not that expensive and available anywhere that you can buy CDs and DVDs. The only other way to clean CDs is to rinse with purified water and remove smudges with a microfiber cloth. Never scrub or buff your CDs, only clean from the center out in straight lines.
