Answers

@technonicx user You can wipe with a clean colony cloth. No problem.

@technonicx user It can be cleaned with isopropyl alcohol.

@technonicx user I first take the excess paste with a napkin, then I squeeze cologne on the napkin and clean it thoroughly.

@technonicx user Doesn't the napkin damage the copper surface?

@technonicx user It is not a soft material that the copper napkin can damage.

Maybe you are insterested