We got some of the first batch of Ardent Screen Kleen, and it rocks! It was co-developed by Denny Brauer. It is a alcohol free, ammonia free, streak free spray cleaner for electronic screens of all types including marine, GPS, fish finders, cell phones, DVDs, TV screens, computer screens, etc. It comes with a micro fiber cloth in a resealable pouch small enough for a boat or truck console, glove box, briefcase etc. We have used it on our graphs, iPhones and computers, and it works as described -- no streaks, dries quickly and leaves no residue.
We have very hard water in our lakes, and spotting can be an issue on our graphs. Spots are easily removed with this product and can be wiped off while out on the water after treatment. The 2-ounce bottle lasts a long time, and not much is needed for each application.
Every boater and computer user should have a bottle of Screen Kleen. It retails for $12.99.