I've been using this product for years on my glasses, ski goggles, my scuba mask and my bathroom mirror and it works great. I've yet to try it on my bike. We really don't have that much fog problems here in sunny Florida.
I have one of the one-ounce cups and several bottles of the spray. I use the spray on the bathroom mirror and the other on the glasses and masks. Might want to give it a try.
I am very careful what I use on the windshield, most everything ya might use on glass is not compatible with most motorcycle windshields. I stick to the Honda spray stuff or that Bom stuff and that's about it. If the fog gets too bad I'll drop the windshield down as far as it goes and tough it out or stop for coffee for an extra stop until things burn down some. :wink: