Ohmen,

I see www.oldies.com has a "record tech" record cleaning system (it looks like a re-vamp of the old disc washer system that was out, back in the day).
I wouldn't get too carried away with the washing......unless they have been setting out in the dust, or handled with "pizza hands" They should play, and sound fine. If you do it yourself...a LITTLE, mild dish soap (Dawn, etc,) will do.
I still am looking forward to the LP vs. CD sound quality challenge.

LIFE: "Choices, balance, and timing"

(Larryism)