all my lenses have filters on them from new (or new to me) so never really clean the lens only the filter which is normally the corner of my tshirt/shirt/jumper etc.
This, for the most part. I use one of those retractable brushes for lenses that don't have a clear filter. Keeping the hood on all of the time has kept fingerprints at bay, so it's just managing dust for the most part.
Do you mean like the small disposable Pre-Moistened "cloths" used for eye glasses? I have used those in the past and they worked very well.
It seems like Zeiss changed something when I bought the last box of them.
They were quite dry and ineffective compared to before.
Yes, they are dry now, so I use some lens cleaning liquid for a few drops.