I recently attended the Back To The 50's car show at the Minnesota State Fair grounds. At one of the vendor booths there was a simple product called "Yvonne's Original No Streaks Microfiber Cloth." They had a plain old window, a bucket of water, and one of their cloths. My father and I tested them. I even had the guy wipe my glasses with them. It appeared that the product worked! We were guaranteed that the product would live up to our expectations, or our money back.
I decided the best test would be on my bathroom mirror. It needed a little cleaning anyhow. I did a thorough cleaning with my trusty sponge. My mirror looked beautiful and streak-free. Then I did a very simple wipe with the cloth (lightly damp, as directed). My mirror looked exactly the same. I wasn't disappointed, but the fact that my sponge was just as good left me feeling like I'd been had.
But that was only part 1 of my experiment.
Part 2 involves the one thing that always kills a beautiful window: fog. Every time I clean my car, I'm always thrilled at the results...until it gets too humid out. Then I can't see anything but streaks. So to simulate this, I closed my bathroom door and started a hot shower. This is really where the truth comes out. My sponged side was the usual, broad, flat strokes of streaks. And Yvonne's Original No Streaks Microfiber Cloth?
Well, I guess you can't call them streaks. But the promise on the package of "spot free" isn't exactly accurate. The way water dries from the cloth wipe is in tiny little specks of water. Each and every one of these comes out when the glass gets foggy.
Was this better or worse then my sponge? That's a good question. Initially, the microfiber side looked like it wasn't even picking up the fog; it was amazing! The space between the specks was clean and clear. As the fog became more dense, the broad, flat streaks from the sponge became evenly covered in moisture, whereas the specks from the microfiber cloth stuck around. In the end, I was more easily able to see myself in the half of the mirror that the sponge had wiped.
The final verdict? Although these cloths are not pope-sanctioned miracles, they do provide ease of use and protection against minor fogging. I'd recommend them to anyone who is looking for a simple solution to cleaning glass, but doesn't need to polish camera lenses for a trip to the rainforest.
Update: I own a professional-grade CRT monitor that has a glass coating on it that's very delicate. This has always been very hard to clean properly, because you can't use anything but water, and even then you don't want to accidentally short the tube. Yvonne's cloth cleaned off all the fingerprints, left the coating intact, and a quick wipe with a cotton cloth made my monitor look like new. It was worth it right there.