I try to keep all of my electronics as clean as possible, not just the new ones. To clean my laptop and tablet, I have this computer spary. It helps you to remove dirt from tight spots, somehow. For my phone, I use a wet paper towel and then leave it near the table fan to dry it off. As for my 3DS, iPod, and video game controllers, I just remove the dirt with a dry towel and carefully use a toothpick if they're stuck in corners. d: