Minty Clean Windows! Glass cleaning sprays are typically either based on vinegar and water, or alcohol and water. Dodo Juice found alcohol-based recipes tended to smear less and are easier to use - so thats what they made. The result is Clearly Menthol a minty mouthwash coloured glass spray that cleans glass and leaves a sparkling, residue-free finish. Can be used over durable glass sealants.