Well Bummer about the Magic Eraser! It worked so well on those stubborn little spots! Only used it on those few that just wouldn't come clean. Most my eggs are clean to begin with. Just, sometimes after it rains and the hens feet are so muddy and they all try to get into the same nest and I don't get them collected as often as I usually do, I would use the ME. And, I did rinse them off, too. Oh well. Guess I will have to look elsewhere for a good scrubbie!
I wouldn't stop using the magic eraser to clean eggs. You rinse them afterward, and you don't eat the shells anyway. No corporation told me to say this.
