The Cleano indoor ultrapure water cleaning system is for indoor glass and surfaces. It combines the cleaning power of pure water and microfiber in a light, compact and entirely mechanical tool (no cords, no batteries, etc). The Cleano keeps glass clean longer. With no chemical residue being left behind on the glass dirt will not be attracted, reducing the frequency of cleaning intervals. Fill with pure water from HydroTube™, Hydro Cart or Ready Pure systems.