Elecom Lens Cleaner For when CDs/DVDs cannot be read　LEVEL3 Used 1-2 times. The liquid originally contained only a small amount, but you can clean with 2 drops at a time, so I think it's enough to try. Please refrain from purchasing if you are sensitive to dirt, as there is dirt on the outer box and the cleaner part. Please note that Blu-ray lenses cannot be cleaned. Radio cassette player Audio Component stereo Cleaner