[programmer]

I tried cleaning a couple of eyepieces with some 'rubbing alcohol' the other night, about 65% Isopropyl Alcohol. Unfortunately it leaves residue when it dries, despite my best efforts with cotton wool buds, and slowly working outward in a spiral starting from the centre.

Has anyone come across a commonly available solution which does the trick for them, or should I get some specialty camera lens cleaning stuff or maybe whatever Bintel sells? Not interested in a lens pen.

I've read some of the many EP cleaning threads but this is a specific request for an off the shelf solution that people might have found, e.g. from Bunnings, pharmacy, etc.

Thanks.