Lens manufacturers say that anything other than a microfiber cloth will damage the coatings on a lens. But microfiber cloths eventually pick up crap and they look like they’re a pain to wash.
How do you keep your lenses clean? Are you using cloth/kleenex or microfiber cloths? If you use microfiber cloths, how do you clean those?
Microfiber. Throw it in the wash. Air dry (although I’ve never had an issue with them going through wash) I use the viscous cleanser and really don’t wash very often at all.