I am trying to find the proper/approved method to clean eggs so I can sell...
I may need a little more information.
If you are selling at your farm you simply should clean them and keep them at the proper temperature.
If you are taking them from the farm to a Farmer's Market you need to contact the Ohio Department of Agriculture at 800 282-1955.
This part of the Ohio Revised Code............http://codes.ohio.gov/oac/901%3A3-6
This information from Ohio State University Extension will give you more information about storage of the eggs.
As far as cleaning them, you can clean them under running water or simply wipe the off, but do not put them into water.
Hope this helps.
OSU Extension ANR Educator