Join 7 million other satisfied buyers and toss the smudge- and streak-creating cloths and sprays once and for all.

You’re basically inviting germs to party on your face.” The good news: Keeping your glasses clean is a relatively easy chore.

Prescription eyeglasses can cost as much as $1,000, and most have plastic lenses, which scratch more easily than glass. Clearly, you need to protect your investment. But should you clean lenses ...