Hm, want to get that grubby LCD screen or your fingerprint-smudged eyeglasses really clean? The Luminex Cleaning Cloth is reported to be used in the "cleanest clean rooms around the globe" and should get all those smeary surfaces bright and shiny, from electronic displays to camera lenses. Carry one in your purse - they're indestructible - or, at least very durable and machine washable with a fine microfiber weave. It sure beats rubbing things out with the edge of your t-shirt and a bit of spit.