Glass/hard surface cleaner quickly dissolves films, smears and fingerprints from all nonporous, hard surfaces. PAK-IT technology allows the easy-to-use portion packs to dissolve completely into water for fast, simple use. Simply drop one pre-measured PAK-IT into its matching trigger-spray bottle (sold separately) and add cold, tepid or warm water. Ammonia-free formula leaves a streak-free shine for crystal-clear results. Glass/hard surface is designed for use on glass, mirrors, windows, marble and more.