[davidmanze]

Nope, never did that (scared of making things even worse)

  

   I got myself in a pickle with the Pentax K20, I tried using pharmaceutical alcohol, that left smears.....fearing the worst I bought a standard Reidl wet clean sensor kit, two wipes and your done.....I've never had faith in any sort of dry cleaning, mainly because of the risk of scratching and smearing.....

 

             .......wet cleaning has lubricating qualities that significantly reduce that problem and of course alcohol has degreasing properties too. 

 

   FWIW!