I need help!! My Barred Rock Pullets have came to the age of laying. I have only have 3 pullets out of the 14 laying. They're almost 29 weeks old. I have six nesting boxes about 10" off the ground. The boxes were made out of milk crates and they have straw in there for bedding. They will not lay a single egg in the box. One pullet has been laying since 22 weeks of age. I have put a ceramic brown egg in three of the boxes along with a golf ball... NO LUCK! They have been laying some on top of the nesting boxes and under... and sometimes there will be an egg under the water bucket or randomly in the coop. No one has been laying outside in the run at least. I don't know what to do... and recently in the past two weeks someone has been peaking the eggs. They don't peak all the way through to the "good stuff" (thankfully) but I will take some eggs in and see a crack were they peaked and throw them away. Some will have a peak hole but the inner sac isn't broken yet. Any broken egg I toss... but I don't want anyone to crack open an egg and realize they're yummy and then everyone is cracking eggs and I have NONE to myself or to sell. I am running out of options. They have constant feed and water access. They also have a run to go in and out of any time they want. I was hoping if I can teach them to lay in their boxes then I would get less eggs cracked. I usually get two or three eggs a day and usually one is cracked. I'm scared because once all 14 are laying that's a lot of eggs they can crack. I also try to check in the morning/afternoon/evening for eggs to give them less time sitting on the ground vulnerable to whomever is cracking them. But sometimes I have to leave early in the morning for school/work and I am not back until afternoon or evening to check for eggs. Someone please help!!BTW THERE IS A WOODEN BOARD ACROSS THE TOP OF THE NESTING BOXES SO THEY WOULDN'T JUST SIT IN THEM STARE OUT THE WINDOW AND POOP. So just added a picture to give an idea how they look.