My favorite lens and screen-cleaning kit keeps my tech smudge-free, and it costs $8
The Koala cleaning kit with a pair of glasses. Kayla Solino/ZDNET I've been wearing prescription glasses since I was 18 months old, so trust me when I tell you I know a lot about keeping lenses clean and protected -- I've had over 20 years of practice. While it may seem like you can clean your sunglasses or glasses with any old "glass cleaner," or something as simple as soap and water, I am here to tell you that it can be a huge (and costly) mistake. Most glass cleaning products (even dish soa