I've got 10 hens, all 4 months 8 days old and they just started laying! I'm so proud! I didn't even have the nesting boxes in the coop yet. So of course the first egg was laid on the roost and fell to the poop board. Quickly installed nesting boxes that day with straw and golf balls. Next day, again, one broken egg on poop board. Today, one egg in nesting box, two broken on poop board. My questions are: Should I be hopeful that they'll all use the nesting boxes soon? and I have a sand floor in the coop and run, which I love. They have scratched the straw out of the nesting boxes numerous times and it's all over everywhere (even the one laid in the box was slightly cracked because they had scratched all the straw out. The boxes are 12" tall and have about a 4" lip to prevent this kind of problem. Could I put sand in the nesting boxes too?