I have tried out several different cleaning kits and other items to get the smudges and smears off the screen of my iPhone and iPad. Many of them have a microfiber cloth and then a spray solution. I know you can spray directly on the cloth ideally, but lots of people (like my wife and kids) spray the screen directly. I don’t like that because I fear the liquid will get into the gaps and break something.
Qmadix has a new cleaning kit that is called the Smudge-Free Dry-Foam Cleaning Kit. As you can guess, the cleaner in the kit is foam that looks a lot like the mouse you might use in your hair. The cool part is the foam doesn’t run and even when you clean, there is no liquid to seep into gaps.
The kit also comes with a microfiber rag. The foam is anti-static and streak-free, so it should help keep dust and streaks away between cleanings as well. The kit with the foam and rag is $19.99 with refill cans of foam at $9.99. The cans have 1.9 ounces inside so you can take them on an airplane.