There are so many threads about what people use to clean their iPhone and iPad screens, links to where to get the products, etc. This is all good information, but my experience with screen cleaners has been not so good. First, theyre expensive. Second, most of the ones I've bought don't work. They're either too dry, or they dry up quickly. Sometimes, when you do find a good one, the store ends up discontinuing it, or the product itself changes. So really, are household glass cleaners bad? Are there certain ingredients that make them bad? If something is OK for the iPhone, is it OK for the iPad as well?