Make sure you check the date. Pick up a carton of eggs that were as recent as possible. Not more than 3 weeks old. If 001 is January 1st, 366 will be December 31 (leap day this year, I don’t know how they change labels, so it might just be 365) so determine the day number and don’t buy eggs more than 15 days over that. Lookup brands that are often known to have fertile eggs,and of course, check for a possible “fertile” labelSo no development But we’re going to the store this week so Ima just try one more time, I don’t wanna give up.