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That looks fairly clean. I was thinking that if you needed to do any gunk removal or sanding that the process would probably get rid of any germs. Since that one looks like it will not require much...

Yes. I'd dip both frame and blade in the Barbicide if you can get them apart. Maybe put some WE-40 on the screw to loosen it up.

Do you have a pic of the razor? Is it fairly clean or is it gunked...

Does your razor have a screw where the blade can be removed from the frame? If so, I would remove the blade and dip both in Barbicide after an initial cleaning.