1) Common household or diluted industrial detergent WITHOUT ABRASIVES AND STRONG ACIDS OR ALKALIS can be used to loosen stubborn dirt or "layered" soil. A fast evaporating glass cleaner, which contains no ammonia and leaves no film or streaks is recommended. (See Supply and Service below).
2) Spray the glass cleaner directly onto the glass and then wipe the glass surface with a dry soft cloth or lint-free tissue as soon as possible to avoid water staining.
Use the mildest product you can find, and always wear gloves and goggles for protection.
NEVER USE A RAZOR BLADE TO SCRAPE OFF STUBBORN MATERIALS, DOING SO MAY LEAVE PERMANENT MARKS ON THE GLASS OR SCRATCHES THAT COULD CAUSE GLASS BREAKAGE.
Most window and mirror cleaners are relatively safe to use, and have only a small impact on the environment. However, some cleaners contain glycol ethers and other chemicals that are harmful.
In general, the glass surfaces should be cleaned on a regular basis; the level of pollution or contaminants in the surrounding area determines the frequency.
Sometimes regular cleaner might not remove grease, fingerprints, or other oily deposits found on the glass, use a stronger degreasing cleaner with butoxyethanol. Spray the degreaser onto your rag or brush, and then wipe the glass surface. If that doesn't work, then carefully spray the degreaser directly onto the glass. Hold your rag nearby to prevent over spray. Apply with a scrub pad or steel wool if a rag or squeegee doesn't work, and should only be used for spot cleaning, as damaged to the surface may result. Finish the job by using your regular cleaner to remove streaks left by the degreaser.
If you need to disinfect the surface, use a product that contains Alkyl Ammonium Chloride to kill germs.
Creative Art Glass Inc., 525 Denison Street, Unit 3, Markham, Ontario, Canada L3R 1B8