Do not use Windex or any ammonia based product on anodized metal as it can cause permanent discolorations. I have had good luck with Sparkle Anti-Static Ergonomic Screen Cleaner (non-abrasive and ammonia-free) on my anodized equipment. I spray it on a lint free cloth or preferrably a micro fiber applicator pad for auto detailing and lightly wipe in areas with lettering or lightly rub in other areas without lettering. I do not spray any products directly on equipment. In between cleanings, dust with a micro cloth, which can be purchased at most stores selling auto accessories.