does tooth paste work?

Yes, it does really work, but of course it depends on the depth of the scratches. If the disc is just dirty, just use a clean cotton t-shirt wiping from the inside out, not in a circular motion.

If the disc is scratched, you can try a basic white toothpaste, and rub it around lightly, after a minute or two, or when the toothpaste begins to dry, stop and wipe off using a clean cotton t-shirt, remember from the inside out.

In some cases, you can even run the disc under water to clean the toothpaste off, it will not hurt the disc unless it has a paper label on the disc. Most are lasered on the disc and will not be affected by the water.