Well, I'm never selling any eggs around here at all. Not in El Dorado County. But I have to share two incidents:
This morning, the nice folks behind me were clearing more of the brush on their property, and they both asked how the hearing went (they've had the flu) and both appeared happy I won. She asked for some details, I shared them. She pooh-poohed the "smell" issue, still thinks the rooster noise is nice and country-like and any idiot living in the country should expect it, and rolled her eyes about the egg selling issue. "Oh, that's stupid. People around here sit on the side of the road with coolers of ranch eggs to sell!! That's a preposterous statement."
John came over for a couple tasks, and he had some silly suggestions I really couldn't do, but we laughed our butts off for several minutes imagining them.
First, sneak over at night and leave fresh chicken poop on the complainant's front door step.
Second, get a bench (I have one), set it on MY property but on the outside of the fence by one gate, make up a sign that reads: "Fresh Eggs for Sale, Mother******" and wave as he drives by. Then take it all down again so nobody ELSE sees it. (This would not work, of course, if he has a camera feature in his phone...)
But wouldn't he be recognized as the nut he is, if he reported those two things? "Look! Her chickens come over and [poop] on my doorstep! She is selling eggs, the sign says "[bad word]" on it and she waved right at me!"