I just read all 209 posts myself just now. It was very enlightening. I learned some from it again to. Some points about the spray cleaners might not have been clearly made by me and others. But I do hope that my posts tried to eliminate the thoughts of DOES THESE NON CHOLORINATED BRAKE SPRAY CLENAERS HARM POLYMER GUNS. THEY DO NOT that is a fact. Now if u have painted sight which some guns do have or wood grips on ur kahrs which some models do have. Please use common sense ad take the grips off and watch those sights. If they are painted sights then surely they can be repanted if necessary. Most cleaning solvent are not good on wood grips. I can tell you Hoppe"s #9 loves to eat wood grips. again common sense plays a big part.
if u have any doubts, don't do it it. I have said many times buy the gun names brand spray cleaners. They will work perfectly. My only gripe was that they were way over priced for what I feel the over the counter auto spray cleaners will do for a 1/3 of the price. I certainly would never recommend a product that I have not used for awhile either.
always error on the side of caution in anything u do.