Glass Cleaner Concentrate Meguiar's D120, 3.79LGlass Cleaner Concentrate Meguiar's D120, 3. 79L removes easily and consistently hard vinyl mist, debris, dirt from the asphalt, film caused by cigarette smoke and, crushed insects creating a crystal effect without residue. Glass Cleaner Concentrate Meguiar's D120, 3. 79L is a concentrated product. Recommended dilution: 1: 10 (one part product: ten parts water); For a correct dilution, you can use Meguiar's Glass Cleaner Bottle Plastic Container