Q: Screen Cleaning

Never heard of it!

Cleaning Apple products:

http://support.apple.com/kb/HT3226

Like Klaus1, I've never heard of that one, but can say there are reports running around these forums about third-party cleaning products that were "supposed to be safe" causing permanent damage to Apple screens. In addition, a friend worked for the Apple Support group at a large university book store and he saw several cases where using a non-Apple cleaing procedure costs students dearly in repair sharges.

Be safe and stick with Apple's recommendations.