So we have been trying to figure out why we have egg shells in the best boxes, we clean them and add new bedding every night. We have golf balls in there, but it never fails, the next day boxes are empty and full of egg shells. Today we caught 2 hens "drinking" from the inside of the egg!!!! Why!? And how do we fix this!? They get layer feed, oyster shells, and a scratch grain. Water gets changed and cleaned everyday, and we just got nutriena feather fixer, it has more protein than the layer. We mixed the feed tonight....any other ideas? Suggestions?