Because of the pitted surface, frosted glass can be harder to clean than traditional glass, and it requires more care so you don't damage the finish. We'll explain how to clean frosted glass and remove stains without causing damage. How Often To Clean Frosted GlassClean frosted glass in windows and doors once a month unless they require more frequent cleaning due to fingerprints. What You NeedGlass cleanerPaper towelsSpongeMicrofiber clothDish soapVinegar or vinegar-based cleaning sprayHow To Clean Frosted GlassSpruce up frosted glass with glass cleaner and paper towels. Tips To Keep Frosted Glass Clean LongerFrosted glass is much tougher to clean if you allow dirt, grime, soap scum, and other stains to build up.