Why ALCOHOL FREE and AMMONIA FREE matters!
Most quality lenses, screens, and even watches have an anti-reflective (AR) coating applied over the surface of the lens to prevent glare and increase viewability. There are many other types of coatings on lenses in addition to AR.
Most standard eyeglass cleaners contain either alcohol or ammonia as the primary cleaning agent. When alcohol or ammonia is applied to the lens, it strips the coating off the lens and effectively ruins it.
If you care about your lenses or the digital screen you're cleaning, you absolutely must use an alcohol and ammonia free spray cleaner.
Coupled with the Koala Kloth, Koala Kleaner is absolutely the safest way to clean high end lenses without having to worry about whether or not you're going to damage them.