Hi guys.. new to the forum, but long timer @ [H]ardForums

Anyways seems liket hat place lately has been slowing down, and I've stepped into watercooling and I figured I would check this place out.
anyways to the point.. I bought some used DangerDen Maze3 blocks NB/GPU/CPU blocks.. they show bacterial buildup as well as some color from the past users setup. I wish to take off the 'plexi' top and clean off the copper.
What is the best way to go about this? First I figured I could just submerge the blocks without taking them appart in somekindof solution of vinigar/water. But I am not sure about the effects of vinegar on copper/plexi top
What is a good way to clean these bad boys without making me run out to buy stuff.. I would love to use common household stuff (ahem.. common canadian household stuff)...
Thanks