Harry Bloomfield wrote:
on 28/01/2016, R D S supposed :
You can do worse than clean them in the morning, while in the
bathroom, with warm water and soap, dry them with bog roll and then
just clear them during the day as and when necessary with a
microfibre cloth.

.. but not much worse!

Handsoaps often often contain lanolin etc. so they leave an oily film
on a lens. I find Fairy better.

Fairy contains salt.