How do you clean it? I keep my phone in my pants pocket 90% of the time and unavoidably little bits of debris and lint get caught in there, and while it doesn't really bug me, it sort of bugs me. The mesh on the earpiece looks good as new, however. Strange. They must be different materials. Maybe Apple should use whatever they used on the earpiece on the bottom grill for the next iPhone as the stuff on the bottom is a magnet. Anyways, how do you clean yours? I blew lightly in there but nothing happened and I don't wanna overdo it. Sticking something in there isn't an option as I don't want to cause any unnecessary issues. Any tips? What about that canned duster stuff? Too much pressure?