I use my damp hand towel every morning to get the finger prints off.
I would think a can of air would work for blowing lint out of the bottom. I would make sure you keep it upright and at a distance. You should probably do a test blast each time before you blow it on the phone. I just blow on it using the same rules (upright and at a distance).
I posted this a while ago, but do not use any alcohol or ammonia products. It eats away at the glass and case which makes it weaker and more prone to cracks. I just use a couple of drops of water on a microfiber cloth and then wipe the phone cleans.
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Give it a good LICK wif ur tongue & make sure everyone sees then no one will wanna get their nits anywhere near that baby
I use hydrogen peroxide, though I don't use it directly on the phone, I use it to disinfect my screen that has a shield on it and my speck candy shell.