I know of a guy who cleans old tube amps by removing the tubes, placing them in a dishwasher and running them through a cycle! He then lets them air dry, puts the tubes back in and applies power.
I'm not making this up, nor am I recommending it for your new gear, just thought it might interest folks.
I'm not making this up, nor am I recommending it for your new gear, just thought it might interest folks.