I solder (wave) reguraly some PCB's.
After soldering the PCB's are "greasy".
I have tried brushing this off with a clean ESD-safe brush. but all this did
was putting the grease on another spot off the PCB and leave some
brushstripes.
The same with all PCB-cleaners I have tried, some work well if you clean the
PCB afterwards with some cloth. Unfortunatly not all produceb PCB's can be
cleaned with cloth.

Does anyone have a solution for this problem.

I thought of a cleaner which cleans the PCB and dries up in powder. But I
haven't found one.

Alexander